Escudero, L. F. (1982). On diagonally-preconditioning the 2-steps BFGS method with accumulated steps for supra-scale linearly constrained nonlinear programming. Qüestiió: Quaderns d’estadística I Investigació Operativa.
ISO-690 (author-date, English)ESCUDERO, L. F., 1982. On diagonally-preconditioning the 2-steps BFGS method with accumulated steps for supra-scale linearly constrained nonlinear programming. Qüestiió: quaderns d’estadística i investigació operativa. 1 Januar 1982.
Modern Language Association 9th editionEscudero, L. F. „On Diagonally-Preconditioning the 2-Steps BFGS Method With Accumulated Steps for Supra-Scale Linearly Constrained Nonlinear Programming“. Qüestiió: Quaderns d’estadística I Investigació Operativa, Januar 1982.
Mohr Siebeck - Recht (Deutsch - Österreich)Escudero, L. F.: On diagonally-preconditioning the 2-steps BFGS method with accumulated steps for supra-scale linearly constrained nonlinear programming, Qüestiió: quaderns d’estadística i investigació operativa 1982,
Emerald - HarvardEscudero, L.F. (1982), „On diagonally-preconditioning the 2-steps BFGS method with accumulated steps for supra-scale linearly constrained nonlinear programming“, Qüestiió: Quaderns d’estadística I Investigació Operativa.