@article{ASNSP_2001_4_30_1_63_0,
     author = {Barletta, Elisabetta and Dragomir, Sorin},
     title = {Differential equations on contact riemannian manifolds},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {63--95},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 30},
     number = {1},
     year = {2001},
     mrnumber = {1882025},
     zbl = {1008.53022},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_2001_4_30_1_63_0/}
}