<P>拜求:</P>
<P>题名：Placing No-Arbitrage Bounds on the Value of Nonmarketable and Thinly-Traded Securities作者：Longstaff, Francis A.<BR>期刊全称或缩写：Advances in Futures and Options Research&nbsp;&nbsp;&nbsp;&nbsp; 年份，卷（期），起止页码：1995b,8: 203-228.</P>