TY  - JOUR
AU  - J. Popken
TI  - An Arithmetical Theorem Concerning Linear Differential - Difference Equations
JO  - Publications de l'Institut Mathématique
PY  - 1952
SP  - 121 
VL  - _S_S_IV
IS  - 04
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PIM_1952_S_S_IV_04_a12/
ID  - PIM_1952_S_S_IV_04_a12
ER  -