@article{ASNSP_1985_4_12_1_1_0,
     author = {Bove, A. and Lewis, J. E. and Parenti, C.},
     title = {Parametrix for a characteristic {Cauchy} problem},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {1--42},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 12},
     number = {1},
     year = {1985},
     mrnumber = {818800},
     zbl = {0593.35050},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1985_4_12_1_1_0/}
}