@article{1077465577,
author = {Protter, M. H.},
title = {An existence theorem for the generalized Tricomi problem},
journal = {Duke Math. J.},
volume = {21},
number = {1},
year = {1954},
pages = { 1-7},
language = {en},
url = {http://dml.mathdoc.fr/item/1077465577}
}
Protter, M. H. An existence theorem for the generalized Tricomi problem. Duke Math. J., Tome 21 (1954) no. 1, pp. 1-7. http://gdmltest.u-ga.fr/item/1077465577/