@incollection{Sapountzis18, author = {Agnieszka Janiuk and Konstantinos Sapountzis}, title = {Gamma Ray Bursts: Progenitors, Accretion in the Central Engine, Jet Acceleration Mechanisms}, booktitle = {Cosmic Rays}, publisher = {IntechOpen}, address = {Rijeka}, year = {2018}, editor = {Zbigniew Szadkowski}, chapter = {2}, doi = {10.5772/intechopen.76283}, url = {https://doi.org/10.5772/intechopen.76283} }