@article{GDZPPN001174592,
title = {Liapunov Functions and Error Bounds for Approximate Solutions of Ordinary Differential Equations.},
journal = {Numerische Mathematik},
volume = {30},
year = {1978},
pages = {411-414},
zbl = {0367.34040},
url = {http://dml.mathdoc.fr/item/GDZPPN001174592}
}
Cooper, G.J.; Whitworth, F.C.P. Liapunov Functions and Error Bounds for Approximate Solutions of Ordinary Differential Equations.. Numerische Mathematik, Tome 30 (1978) pp. 411-414. http://gdmltest.u-ga.fr/item/GDZPPN001174592/