| 其他書名 | A StochastiC ULtrametric Purchase TREe Methodology for Deriving and Analyzing Product-market Purchase Structures |
| 出版 | Graduate School of Arts and Sciences, University of Pennsylvania, 1989 |
| URL | http://books.google.com.hk/books?id=XW9ZNwAACAAJ&hl=&source=gbs_api |