7Markowitz H M. Partfolio selection: Efficient Diversification of Investments 2nd ediftion. Basil Blackwell, Cambridge, Massachussets, 1991.
8Ouderri. B N, Sulliran W G. A semi - variance model for incorporating risk into capital investment anaylsis. Journal of the Engineering Economist, 1991, 36 (2) : 35 - 39.
6HELLMANN T,PURI M.Venture capital and the professionalization of star-up firms:empirical evidence[J].The Journal of Finance,2002,57(1):169-197.
7MASON C M,HARRISON R T.Is it worth it? The rates of return from informal venture capital investments[J].Journal of Business Venturing,2002(17):211-236.
8GORMAN M,SAHLMAN W A.What do venture capitalists do?[J].Journal of Business Venturing,1989,4(4):231-248.
9BOTTAZZI L,RIN M D,HELLMAN T.Who are the active investors? Evidence from venture capital[J].Journal of Financial Economics,2008(89):488-512.
10SAHLMAN W A.The structure and governance of venture-capital organizations[J].Journal of Financial Economics,1990,27(2):473-524.
