@article{10_4064_am_16_4_647_656,
     author = {J. Goncerzewicz},
     title = {On the existence of the weak solution of a boundary value problem arising in the theory of water percolation},
     journal = {Applicationes Mathematicae},
     pages = {647--656},
     publisher = {mathdoc},
     volume = {16},
     number = {4},
     year = {1977},
     doi = {10.4064/am-16-4-647-656},
     zbl = {0445.76074},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-16-4-647-656/}
}