@article{01560800, title = {A geometrical property of causal invertible systems.}, journal = {APPS. Applied Sciences}, volume = {2}, year = {2000}, pages = {61-67}, zbl = {0966.47049}, language = {en}, url = {http://dml.mathdoc.fr/item/01560800} }
Olteanu, Mircea. A geometrical property of causal invertible systems.. APPS. Applied Sciences, Tome 2 (2000) pp. 61-67. http://gdmltest.u-ga.fr/item/01560800/