TY  - BOOK
AU  - Lu,Hao
TI  - A barrier on finite difference schemes of positive type
T2  - Report 9335
AV  - MATH QA3.R46 no.9335 
PY  - 1993///
CY  -  :Nijmegen
PB  - Catholic University, Department of Mathematics
KW  - Finite differences
N1  - Includes bibliographical references
ER  -