Yushan Zheng,Wei Hong,Weiyin Zhang. STUDY ON AGE STRUCTURE OF HIGH-YIELD BOTH BAMBOO SHOOT AND TIMBER STAND[J]. Scientia Silvae Sinicae, 1998, 34(zk): 46-51.
Gass S I . Linear programming methods and applications, Fifth Edition. Mc Graw Hill Book Company, 1984.
5
Karmarkar N . A New polynomial time argorithm for linear progamming, proceedings of 16th. Annual ACM sympo sium on theory of computing, 1984. 302- 311.