D. Vasco

Variable pulse profiles of Hercules X-1 repeating with the same irregular 35 d clock as the turn-ons

J. Wilms, R. Rothschild, K. Postnov, 2012, 1212.5472.

Pulse phase and precession phase resolved spectroscopy of Hercules X-1: studying a representative Main-On with RXTE

A. Santangelo, R. Staubert, D. Klochkov, 2013, 1301.3378.

Her X-1: the positive cyclotron line energy / luminosity correlation

R. Staubert, D. Klochkov, D. Vasco, 2011, 1107.1118.