NQR study of phase transitions in CH3HgX (X=Cl, Br, I) J. Pirnat, J. Lužnik, J. Seliger, Z. Trontelj and D. Kirin Eur. Phys. J. B, 35 3 (2003) 339-348 Published online: 15 October 2003 DOI: 10.1140/epjb/e2003-00286-0