Search for p-mode oscillations in RX J2117.1+3412 H.-K. Chang, I.-C. Shih, C.-Y. Liu, T. Fan, Y.-S. Wu, F. Roques, A. Doressoundiram, A. Fernandez, B. Christophe and F. Dauny A&A, 558 (2013) A63 Published online: 03 October 2013 DOI: 10.1051/0004-6361/201322109