hal-02912757 title_s Equity Cost-Induced Dichotomy for Optimal Dividends in the Cramér-Lundberg Model auteur Florin Avram, Dan Goreac, Juan Li, Xiaochi Wu journal Mathematics volume 9 numero 9 pages 931 doi 10.3390/math9090931 fichier_hal https://hal.science/hal-02912757/document annee 2021