Single-spin asymmetries for small-angle pion production in high-energy hadron collisions A. Ahmedov, I.V. Akushevich, E.A. Kuraev and P.G. Ratcliffe Eur. Phys. J. C, 11 4 (1999) 703-708 Published online: 03 November 1999 DOI: 10.1007/s100529900210