Dynamical gravastars from the interaction between scalar fields and matter Alejandro Cabo Montes de Oca, Duvier Suarez Fontanella and David Valls-Gabaud Eur. Phys. J. C, 81 10 (2021) 917 Published online: 19 October 2021 DOI: 10.1140/epjc/s10052-021-09726-0