Authors:
Mendez, M
van der Klis, M
Wijnands, R
Ford, EC
van Paradijs, J
Vaughan, BA
Citation: M. Mendez et al., Kilohertz quasi-periodic oscillation peak separation is not constant in the atoll source 4U 1608-52, ASTROPHYS J, 505(1), 1998, pp. L23-L26