@article{10_4064_ap_19_3_307_311,
     author = {W. Walter},
     title = {On the non-existence of maximal solutions for hyperbolic differential equations},
     journal = {Annales Polonici Mathematici},
     pages = {307--311},
     publisher = {mathdoc},
     volume = {19},
     number = {3},
     year = {1967},
     doi = {10.4064/ap-19-3-307-311},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-19-3-307-311/}
}