@article{paperid:1044657, author = {Saman Babaie-Kafaki and Ghanbari, Reza}, title = {Two modified three-term conjugate gradient methods with sufficient descent property}, journal = {Optimization Letters}, year = {2014}, volume = {8}, number = {8}, month = {December}, issn = {1862-4472}, pages = {2285--2297}, numpages = {12}, keywords = {Unconstrained optimizationŲŒ Large-scale optimizationŲŒ Conjugate gradient algorithm; Secant equation; Sufficient descent condition; Global convergence}, }