TY  - JOUR
AU  - Teresa Regińska
TI  - Approximation of eigenvalues for a class of differential problems on an infinite interval
JO  - Mathematica Applicanda
PY  - 1978
SP  -  127
EP  - 134
VL  - 6
IS  - 13
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/ma.v6i13.1425/
DO  - 10.14708/ma.v6i13.1425
LA  - pl
ID  - 10_14708_ma_v6i13_1425
ER  -