• [1]

    . Abbon P et al (COMPASS collaboration). Nucl. Instrum.Meth. A, 2007, 577: 4552. Airapetian A et al (HERMES collaboration). Phys. Rev.D, 2005, 71: 0120033. Alekseev M et al (COMPASS collaboration). Phys. Lett.B, 2009, 680: 2174. Ageev E S et al (COMPASS collaboration). Phys. Lett. B,2007, 647: 3305. de Florian D, Sassot R, Stratmann M. Phys. Rev. D, 2007,75: 114010; Phys. Rev. D, 2007, 76: 0740336. de Florian D, Navarro G A, Sassot R. Phys. Rev. D, 2005,71: 0940187. de Florian D, Sassot R, Stratmann M, Vogelsang W. Phys.Rev. D, 2009, 80: 0340308. Glück M, Reya E, Stratmann M, Vogelsang W. Phys. Rev.D, 2001, 63: 0940059. Alekseev M et al (COMPASS collaboration). Phys. Lett.B, 2009, 673: 12710. Alekseev M et al (COMPASS collaboration). Eur. Phys. J.C, 2009, 64: 17111. Ellis J R, Kotzinian A, Naumov D, Sapozhnikov M. Eur.Phys. J. C, 2007, 52: 28312. Uman I, these proceedings13. Alekseev M et al (COMPASS collaboration). arXiv:0910.5842 [hep-ex]