Search for resonant absorption of solar axions emitted in M1 transition in 57Fe nuclei A. V. Derbin, A. I. Egorov, I. A. Mitropol’sky, V. N. Muratova, D. A. Semenov and E. V. Unzhakov Eur. Phys. J. C, 62 4 (2009) 755-760 Published online: 09 July 2009 DOI: 10.1140/epjc/s10052-009-1095-y