Haim Levy is a Miles Robinson Professor of Business Administration at The Hebrew University, Jerusalem. Ranked as the most frequently cited author in finance, he has written on financial management, business statistics, portfolio and investment selection, decision-making under uncertainty, investments, and many other subjects.Moshe Levy, a Lecturer at The Hebrew University's School of Business Adminstration, has a background in physics, and employed MS techniques to investigate complex economic and financial systems for his Ph.D. work.Sorin Solomon is a Professor of Theoretical Physics at the Racah Institute of Physics, The Hebrew University, Jerusalem. Winner of the Levinson and J.F. Kennedy prizes for scientific research, he frequently writes on finance.