@article{10_4064_ap_36_1_11_28,
     author = {Andrzej Pelczar},
     title = {A local version of the generalized retract theorem of {Wa\.zewski} with applications in the theory of partial differential equations of first order},
     journal = {Annales Polonici Mathematici},
     pages = {11--28},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {1979},
     doi = {10.4064/ap-36-1-11-28},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-36-1-11-28/}
}