@article{article8d8c5851,
title   = {Nonmonotone spectral projected gradient methods on convex sets},
author = {Birgin, Ernesto Julian Goldberg and Martínez, José Mário and Raydan, Marcos},
year = {2000},
doi = {10.1137/S1052623497330963},
publisher = {SIAM},
journal   = {Siam Journal on Optimization}
}