Sanchis-Gual, N., Degollado, J. C., Montero, P. J., Font, J. A., & Mewes, V. (2015). Quasistationary solutions of self-gravitating scalar fields around collapsing stars. Physical Review D, 92(8): 083001, pp. 1-16. doi:10.1103/PhysRevD.92.083001.