BL Eridani: An unstable W Ursae Majoris system with spotted componentsQingyao Liu, B. Soonthornthum, Yulan Yang, Shenghong Gu, S. Niparugs, M. L. Aniwat Sooksawat, Bi Wang and M. NaksataAstron. Astrophys. Suppl. Ser., 118 3 (1996) 453-459DOI: https://doi.org/10.1051/aas:1996211