@article{1102993717, author = {Leighton, Walter}, title = {On Liapunov functions with a single critical point.}, journal = {Pacific J. Math.}, volume = {19}, number = {3}, year = {1966}, pages = { 467-472}, language = {en}, url = {http://dml.mathdoc.fr/item/1102993717} }
Leighton, Walter. On Liapunov functions with a single critical point.. Pacific J. Math., Tome 19 (1966) no. 3, pp. 467-472. http://gdmltest.u-ga.fr/item/1102993717/