@article{01750377, title = {Development of singularities in solutions of a hyperbolic system.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {25}, year = {2001}, pages = {1-7}, doi = {10.1155/S0161171201011073}, zbl = {1023.35064}, language = {en}, url = {http://dml.mathdoc.fr/item/01750377} }
Messaoudi, S.A. Development of singularities in solutions of a hyperbolic system.. International Journal of Mathematics and Mathematical Sciences, Tome 25 (2001) pp. 1-7. doi : 10.1155/S0161171201011073. http://gdmltest.u-ga.fr/item/01750377/