The FUOR characteristics of the PMS star BN Orionis - inferred from new spectroscopic and photometric observationsV. S. Shevchenko, O. Ezhkova, H.R.E. Tjin A Djie, M. E. van den Ancker, P. F.C. Blondel and D. de WinterAstron. Astrophys. Suppl. Ser., 124 1 (1997) 33-54DOI: https://doi.org/10.1051/aas:1997356