@misc{filippenko2003optical,
  title={Optical Spectra and Light Curves of Supernovae},
  author={Alexei V. Filippenko},
  year={2003},
  eprint={astro-ph/0307138},
  archivePrefix={arXiv},
  primaryClass={astro-ph},
  doi={10.1007/10828549_23},
  url={https://arxiv.org/abs/astro-ph/0307138}
}