hal-02380723 title_s Numerical stability of a hybrid method for pricing options auteur Maya Briani, Lucia Caramellino, Giulia Terenzi, Antonino Zanette journal International Journal of Theoretical and Applied Finance pages 1950036 doi 10.1142/S0219024919500365 fichier_hal https://hal.science/hal-02380723/document annee 2019