Frolov, V. P.; Fursaev, D. V.; Page, D. N. (2002). Thorny spheres and black holes with strings. Physical Review D, 65(10), 104029–.
doi:10.1103/PhysRevD.65.104029
url to share this paper:
An interview with Sci-Hub Founder Alexandra Elbakyan Who exactly should pay for academic research