To invest or not to invest the business Angel´s dilemma Oscar Arroyo-Revilla; Cayetano Medina-Molina; Carlos Bellón Núñez-Mera; Noemí Pérez-Macías;

Mechanism and countermeasures of ¿The Innovator's Dilemma¿ in business model Chengbin Wang; Yongyan Fang; Chuan Zhang;