Gravitational radiation of a spherically symmetric source in f(R)-gravitation Pham Van Ky, Nguyen Thi Hong Van and Nguyen Anh Ky Eur. Phys. J. C, 84 3 (2024) 298 Published online: 22 March 2024 DOI: 10.1140/epjc/s10052-024-12606-y