TY - ECHAP AU - Richard McCray M1 - IAU Colloquia N1 - JILA Pub. 5347 PB - Cambridge University Press PY - 1996 EP - 223 TI - Understanding the nebular spectrum of SN 1987A VL - 145 SN - ISBN-10: 0521460808 | ISBN-13: 978-0521460804 ER -