@inproceedings{inproceedings05b365fa, title = {Origin of '10 POT. 15 - 10 POT. 16' G magnetic fields in the central engine of gamma ray bursts}, author = {Souza, Rafael da Silva de and Opher, Reuven}, year = {2009}, publisher = {IAG-USP}, booktitle = {Workshop on Challenges of New Physics in Space} }