EPR of Yb3+ ions in a monoclinic KY(WO4)2 single crystal A. D. Prokhorov, M. T. Borowiec, M. C. Pujol, I. M. Krygin, A. A. Prokhorov, V. P. Dyakonov, P. Aleshkevych, T. Zayarnyuk and H. Szymczak Eur. Phys. J. B, 55 4 (2007) 389-395 Published online: 22 March 2007 DOI: 10.1140/epjb/e2007-00073-y