Rotational spectrum of isotopic methyl mercaptan, 13CH3SH, in the laboratory and towards Sagittarius B2(N2). - Ilyushin, Vadim V.; Zakharenko, Olena; Lewen, Frank; Schlemmer, Stephan; Alekseev, Eugene A.; Pogrebnyak, Mykola; Lees, Ronald M.; Xu, Li-Hong; Belloche, Arnaud; Menten, Karl M.; Garrod, Robin T.; Müller, Holger S.P. (Canadian Journal of Physics, 2020)