@article{MOMA_1968__72_177436,
     author = {Klaus Schmitt},
     title = {Boundary {Value} {Problems} for {Nonlinear} {Second} {Order} {Differential} {Equations.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {347--354},
     publisher = {mathdoc},
     volume = {72},
     year = {1968},
     zbl = {0162.11502},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1968__72_177436/}
}