Received:October 26, 1991  
Key Words:   
Fund Project:
Author NameAffiliation
潘平奇 南京林业大学数学系 
欧阳梓祥 南京大学数学系 
Hits: 1807
Download times: 951
Abstract:
      
Citation:
DOI:10.3770/j.issn:1000-341X.1993.02.033
View Full Text  View/Add Comment