TY  - JOUR
AU  - E. LUKÁCS
TI  - Non-Negative Definite Solutions of Certain Differential and Functional Equations Reports of Meetings
JO  - Aequationes mathematicae
PY  - 1969
SP  - 137
EP  - 143
VL  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1969__2_182320/
ID  - AM2_1969__2_182320
ER  -