The type IIb SN 2008ax: Spectral and light curve evolution by Pastorello, A, Kasliwal, M, Crockett, R, Valenti, S, Arbour, R, Itagaki, K, Kaspi, S, Gal-Yam, A, Smartt, S, Griffith, R, Maguire, K, Ofek, E, Seymour, N, Stern, D, Wiethoff, W