A retrospective trust-region method for unconstrained optimization. - Fabian Bastin; Vincent Malmedy; Mélodie Mouffe; Philippe L. Toint; Dimitri Tomanos (Math. Program., 2010)

Approximating Hessians in unconstrained optimization arising from discretized problems. - Vincent Malmedy; Philippe L. Toint (Comput. Optim. Appl., 2011)

Using approximate secant equations in limited memory methods for multilevel unconstrained optimization. - Serge Gratton; Vincent Malmedy; Philippe L. Toint (Comput. Optim. Appl., 2012)

Quasi-Newton updates with weighted secant equations. - Serge Gratton; Vincent Malmedy; Philippe L. Toint (Optim. Methods Softw., 2015)