The supernova 1998S in NGC 3877: Another supernova with Wolf-Rayet star features in pre-maximum spectrumQ.-Z. Liu, J.-Y. Hu, H.-R. Hang, Y.-L. Qiu, Z.-X. Zhu and Q.-Y. QiaoAstron. Astrophys. Suppl. Ser., 144 2 (2000) 219-225DOI: https://doi.org/10.1051/aas:2000208