@article{GDZPPN001182889,
title = {A Pointwise Quasi-Newton Method for Unconstrained Optimal Control Problems.},
journal = {Numerische Mathematik},
volume = {55},
year = {1987},
pages = {159-176},
zbl = {0649.65039},
url = {http://dml.mathdoc.fr/item/GDZPPN001182889}
}
Kelley, C.T.; Sachs, E.W. A Pointwise Quasi-Newton Method for Unconstrained Optimal Control Problems.. Numerische Mathematik, Tome 55 (1987) pp. 159-176. http://gdmltest.u-ga.fr/item/GDZPPN001182889/