TY  - JOUR
AU  - Vrábeľ, Róbert
TI  - Upper and lower solutions for singularly perturbed semilinear Neumann's problem
JO  - Mathematica Bohemica
PY  - 1997
SP  - 175
EP  - 180
VL  - 122
IS  - 2
PB  - mathdoc
UR  - https://geodesic-test.mathdoc.fr/articles/10.21136/MB.1997.125912/
DO  - 10.21136/MB.1997.125912
LA  - en
ID  - 10_21136_MB_1997_125912
ER  -