@article{04110853, title = {Changes in signature induced by the Lyapunov mapping }, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {12}, year = {1989}, pages = {503-506}, doi = {10.1155/S0161171289000645}, zbl = {0678.15016}, language = {en}, url = {http://dml.mathdoc.fr/item/04110853} }
Haynes, Tyler. Changes in signature induced by the Lyapunov mapping . International Journal of Mathematics and Mathematical Sciences, Tome 12 (1989) pp. 503-506. doi : 10.1155/S0161171289000645. http://gdmltest.u-ga.fr/item/04110853/