PECHÁČEK, T., KARAS, Vladimír. Decaying orbits near a rotating black hole. In: HLEDÍK, S., STUCHLÍK, Z., eds. Proceedings of RAGtime 4/5: Workshops of black holes and neutron stars. Opava: Silesian University, 2004, s. 147-150. Publications of the Institute of Physics, 3. ISBN 80-7248-242-4.