The analysis of π- mesons produced in nucleus-nucleus collisions at a momentum of 4.5 GeV/c nucleon in light front variables M. Anikina, L. Chkhaidze, T. Djobava, V. Garsevanishvili and L. KharkhelauriEur. Phys. J. A, 7 1 (2000) 139-145DOI: https://doi.org/10.1007/s100500050021