TY  - JOUR
AU  - J. Bochenek
TI  - Properties of nodal lines of eigenfunctions of a certain system of partial differential equations of second order
JO  - Commentationes Mathematicae
PY  - 1968
SP  -  31
EP  - 34
VL  - 12
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v12i1.5636/
DO  - 10.14708/cm.v12i1.5636
LA  - pl
ID  - 10_14708_cm_v12i1_5636
ER  -