@article{04136511,
title = {Time-evolution of a caustic.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {11},
year = {1988},
pages = {805-810},
doi = {10.1155/S0161171288000973},
zbl = {0694.35103},
language = {en},
url = {http://dml.mathdoc.fr/item/04136511}
}
Ari, Nasit; Gorman, Arthur D. Time-evolution of a caustic.. International Journal of Mathematics and Mathematical Sciences, Tome 11 (1988) pp. 805-810. doi : 10.1155/S0161171288000973. http://gdmltest.u-ga.fr/item/04136511/