Branch, D., Troxel, M. A., Jeffery, D. J., Hatano, K., Musco, M., Parrent, J., … Ketchum, W. (2007). Comparative Direct Analysis of Type Ia Supernova Spectra. III. Premaximum. \pasp, 119, 709–721. https://doi.org/10.1086/520553

Branch, David, M. A. Troxel, David J. Jeffery, Kazuhito Hatano, Miriam Musco, Jerod Parrent, E. Baron, et al. “Comparative Direct Analysis of Type Ia Supernova Spectra. III. Premaximum.” \pasp 119 (July 2007): 709–21. https://doi.org/10.1086/520553.

Branch D, Troxel MA, Jeffery DJ, Hatano K, Musco M, Parrent J, et al. Comparative Direct Analysis of Type Ia Supernova Spectra. III. Premaximum. \pasp. 2007 Jul;119:709–21.

Branch, David, et al. “Comparative Direct Analysis of Type Ia Supernova Spectra. III. Premaximum.” \pasp, vol. 119, July 2007, pp. 709–21. Manual, doi:10.1086/520553.

Branch D, Troxel MA, Jeffery DJ, Hatano K, Musco M, Parrent J, Baron E, Dang LC, Casebeer D, Hall N, Ketchum W. Comparative Direct Analysis of Type Ia Supernova Spectra. III. Premaximum. \pasp. 2007 Jul;119:709–721.