A. Seifi, and P. Hanafizadeh, Robust Portfolio Selection using Yield Maximization, Annual International Conference of the Germany Operations Research Society, University of Heidelberg, Heidelberg, Germany.

P. Hanafizadeh, K. Ponnambalam, and A. Seifi, Asymmetrical Correlated in Portfolio Selection Problems, Large Scale Nonlinear and Semi-definite ProgrammingWorkshop, University of Waterloo.

K. Ponnambalam, P. Hanafizadeh, and A. Seifi, Separable Probabilistic Robust Method, MOPTA, McMaster University, Hamilton, Canada.

S. Moayer, and P. Hanafizadeh, Defining the Key Indicators of CSFs for Information Systems Strategic Planning in Holding Companies: Studying on Iranain Managerial Holding Companies, International Conference on Applied Business Research, Beijing, China.

P. Hanafizadeh, and M. Rohani Tabataba'i, Identify the Effective Factors to Select the Appropriate Form of Collaboration between one Company and Other Companies, IRMA International Confference, Washington D.C., USA.

K. Ponnambalam, P. Hanafizadeh, and A. Seifi, Optimal Asset Allocation under Nonsymmetrical Distributed Returns, MOPTA06, University of Waterloo, Waterloo, Canada.

P. Hanafizadeh, M. Khodabakhshi, and M. R. Hanafizadeh, Recommendations for e-business development in developing countries: A case study of Iran,CD-ROM/Online Proceedings of the European and Mediterranean Conference on Information Systems (EMCIS) 2008, 25-26 May, Al Bostan Rotana, Dubai, UAE.

P. Hanafizadeh, Information Systems Strategic Planning in Holding Companies with Strategic Business Process Approach, Brunel Business School, Brunel University, April 23, 2009, UK.