. Anderson, R. C., Bates, T. W., Bizjak, J. M., & Lemmon, M. L. Corporate governance and firm diversification. Financial Management, 2000, P.5-22.
. Banker, R. D., Charnes, A., & Cooper, W. W. Some models for estimating technical and scale inefficiencies in data envelopment analysis. Management Science, 1984, P.1078-1092.
. Berger, P., & Ofek, E. Diversification's effect on firm value. Journal of Financial Economics, 1995, 37(1), P. 39-65.
. Brewer, H. Investor benefits from corporate international diversification. Journal of Financial and Quantitative Analysis, 1981,16(1), P.113-126.
. Capar, N., & Kotabe, M. The relationship between international diversification and performance in service firms. Journal of international business studies, 2003,34(4), P.345-355.
. Cernas Ortiz, D. A. Examining Curvilinearity and Moderation in the Relationship between the Degree of Relatedness of Individual Diversification Actions and Firm Performance. (Doctor of Philosophy (Management)), UNIVERSITY OF NORTH TEXAS. 2011.
. Chakrabarti, A., Singh, K., & Mahmood, I. Diversification and performance: evidence from East Asian firms. Strategic Management Journal, 2007, 28(2), P.101-120.
. Chang, S. C., & Wang, C. F. The effect of product diversification strategies on the relationship between international diversification and firm performance. Journal of World Business, 2007, 42(1), P.61-79.
. Charnes, A., & Cooper, W. W. Programming with linear fractional functionals. Naval Research logistics quarterly, 1962, 9(3‐4), P.181-186.
. Charnes, A., Cooper, W. W., & Rhodes, E. Measuring the efﬁciency of decision-making units. European Journal of Operational Research, 1978, 2, P.429-444.
. Claessens, S., Djankov, S., Fan, J. P. H., & Lang, L. H. P. When does corporate diversification matter to productivity and performance? Evidence from East Asia. Pacific-Basin Finance Journal, 2003, 11(3), P.365-392.
. Claessens, S., Djankov, S., Fan, J. P. H., Lang, L. H. P., & Fomento, B. I. d. R. y. Corporate diversification in East Asia: the role of ultimate ownership and group affiliation: World Bank. 1999.
. Comment, R., & Jarrell, G. A. Corporate focus and stock returns. Journal of Financial Economics, 1995, 37(1), P.67-87.
. Cooper, W. W., Seiford, L. M., & Tone, K. Introduction to data envelopment analysis and its uses: with DEA-solver software and references: Springer Verlag. 2006.
. Delios, A., & Beamish, P. W. Geographic scope, product diversification and the corporate performance of Japanese firms. Japanese subsidiaries in the new global economy, 2001, P.47-64.
. Denis, D., Denis, D., & Yost, K. Global diversification, industrial diversification, and firm value. The Journal of Finance, 2002, 57(5), P.1951-1979.
. Denis, D. J., Denis, D. K., & Sarin, A. Agency problems, equity ownership, and corporate diversification. Journal of finance, 1997, P.135-160.
. Doaei, M., Anuar, M. A., & Ismaili, Z. Corporate diversification and efficiency of manufacturing firms listed in Bursa Malaysia. Iranian Journal of Management Studies,2015, 8(4), P.5-23.
. Doaei, M., Anuar, M. B. A., & Hamidi, N. I. N. A. Corporate Diversification and Financial Performance: A Review of Literature. Asian Journal of Finance & Accounting, 2012, 4(2), P.56-74.
. Doaei, M., Anuar, M. B. A., & Zuhaimy, I. DIVERSIFICATION AND FINANCIAL PERFORMANCE IN BURSA MALAYSIA Accepted in International Journal of Management and Business Research. 2014.
. Doaei, M., & Shavazipour, B. Corporate diversification’s effects on Efficiency and productivity: case study of Manufacturing firms listed in Bursa Malaysia. 2013.
. Edwards, C. D. Conglomerate bigness as a source of power: Princeton University Press. 1995.
. Emrouznejad, A., Parker, B. R., & Tavares, G. Evaluation of research in efficiency and productivity: A survey and analysis of the first 30 years of scholarly literature in DEA. Socio-Economic Planning Sciences, 2008,42(3), p.151-157.
. Gaur, A. S., & Kumar, V. International diversification, business group affiliation and firm performance: Empirical evidence from India*. British Journal of Management, 2009, 20(2), p.172-186.
. Geringer, J., Tallman, S., & Olsen, D. Product and international diversification among Japanese multinational firms. Strategic Management Journal, 2000, 21(1), p.51-80.
. Hitt, M. A., Hoskisson, R. E., & Kim, H. International diversification: Effects on innovation and firm performance in product-diversified firms. Academy of Management Journal, 1997, p.767-798.
. Hoskisson, R. E., & Hitt, M. A. Antecedents and performance outcomes of diversification: A review and critique of theoretical perspectives. Journal of management, 1990,16(2), p.461-509.
. Jensen, M. C. Agency costs of free cash flow, corporate finance, and takeovers. The American Economic Review, 1986, p.323-329.
. Jensen, M. C., & Meckling, W. H. Theory of the firm: Managerial behavior, agency costs and ownership structure. Journal of Financial Economics, 1976, 3(4), p.305-360.
. Jones, G. R., & Hill, C. W. L.Transaction cost analysis of strategy‐structure choice. Strategic Management Journal, 1988, 9(2), p.159-172.
. Jung, J., & Chan-Olmsted, S. M. Impacts of media conglomerates' dual diversification on financial performance. Journal of Media Economics, 2005, 18(3), p.183-202.
. Karamali, L., Memariani, A., Jahanshahloo, G. R., & Rostamy-malkhalifeh, M. Benchmarking by an Integrated Data Envelopment Analysis-Artificial Neural Network Algorithm. J. Basic. Appl. Sci. Res., 2013,3(6), p.892-898.
. Kim, H., Hoskisson, R. E., & Wan, W. P. Power dependence, diversification strategy, and performance in keiretsu member firms. Strategic Management Journal, 2004, 25(7), p.613-636.
. Kim, W. C., Hwang, P., & Burgers, W. P. Multinationals' diversification and the risk‐return trade‐off. Strategic Management Journal, 1993, 14(4), p.275-286.
. Michel, A., & Shaked, I. Multinational corporations vs. domestic corporations: Financial performance and characteristics. Journal of international business studies, 1986, p.89-100.
. Montgomery, C. A. Product-market diversification and market power. Academy of Management Journal, 1985, p.789-798.
. Muñoz-Bullón, F., & Sanchez-Bueno, M. J. Is there new evidence to show that product and international diversification influence SMEs' performance? EuroMed Journal of Business, 2011,6(1), p.63-76.
. Neves, J. C., & Lourenço, S. Using data envelopment analysis to select strategies that improve the performance of hotel companies. International Journal of Contemporary Hospitality Management, 2009, 21(6), p.698-712.
. Patrick, O. O. Product Diversification and Performance of Manufacturing Firms in Nigeria. European Journal of Business and Management, 2012, 4(7), p.226-233.
. Penrose, E. G. The theory of the growth of the firm. New York: John Wiley. 1959.
. Rumelt, R. P. Diversification strategy and profitability. Strategic Management Journal, 1989,3, p.359-369.
. Servaes, H. The value of diversification during the conglomerate merger wave. Journal of finance, 1996, p.1201-1225.
. Seth, A., Song, K. P., & Pettit, R. Synergy, managerialism or hubris? An empirical examination of motives for foreign acquisitions of US firms. Journal of international business studies, 2000, 31(3), p.387-405.
. Talluri, S. Data envelopment analysis: models and extensions. Decision Line, 2000, 31(3), p.8-11.
. Thomas, D. E. International diversification and firm performance in Mexican firms: A curvilinear relationship? Journal of Business Research, 2006, 59, p.501 – 507.
. Toloo, M., & Nalchigar, S. A new DEA method for supplier selection in presence of both cardinal and ordinal data. Expert Systems with Applications. 2011.
. Tongli, L., Ping, E. J., & Chiu, W. K. C. International diversification and performance: evidence from Singapore. Asia Pacific Journal of Management, 2005, 22(1), p.65-88.
. Wan, C. C. International diversification, industrial diversification and firm performance of Hong Kong MNCs. Asia Pacific Journal of Management, 1998, 15(2), p.205-217.
. Wang, W.-K., Ting, I. W. K., Kuo, K.-C., Kweh, Q. L., & Lin, Y.-H. Corporate diversification and efficiency: evidence from Taiwanese top 100 manufacturing firms. Operational Research, 2016, p.1-17.