Obst, M., K. Pottschmidt, A. Lohfink, J. Wilms, M. Böck, D. M. Smith, J. A. Tomsick, and I. Kreykenbohm. 2011. “GRS 1758–258: RXTE Monitoring of a Rare Persistent Hard State Black Hole”. Acta Polytechnica 51 (6). https://doi.org/10.14311/1480.