The multi-band study of the environment of the RC J0311+0507 radio galaxy: a step forward to understand massive stellar system formation at Z > 4Yu.N. Parijskij, O.P. Zhelenkova, P. Thomasson, A.I. Kopylov, A.V. Temirova, I.V. Sokolov, V.N. Komarova and O.J.A. Bravo CalleEAS Publications Series, 61 (2013) 439-442DOI: https://doi.org/10.1051/eas/1361071