@article{01204395,
title = {A sufficient condition for a system of ordinary differential equations to be technically contractively stable.},
journal = {Divulgaciones Matem\'aticas},
volume = {5},
year = {1997},
pages = {11-20},
zbl = {0912.34042},
language = {en},
url = {http://dml.mathdoc.fr/item/01204395}
}
Laverde Pérez, Pedro P. A sufficient condition for a system of ordinary differential equations to be technically contractively stable.. Divulgaciones Matemáticas, Tome 5 (1997) pp. 11-20. http://gdmltest.u-ga.fr/item/01204395/