Transient Fano Resonance in topological insulators observed by coherent phonon spectroscopy Richarj Mondal, Akira Arai, Yuta Saito, Paul Fons, Alexander V. Kolobov, Junji Tominaga and Muneaki Hase EPJ Web Conf., 205 (2019) 04021 Published online: 16 April 2019 DOI: 10.1051/epjconf/201920504021