@misc{becker_molecular_clouds_1989, 
author={Becker, R., Schilke, P., Henkel, C.},
title={Molecular clouds in irregular galaxies: I. An ultramassive GMC in NGC 3077},
year={1989},
howpublished = {journal article},
note = {Becker, R.; Schilke, P.; Henkel, C.: Molecular clouds in irregular galaxies: I. An ultramassive GMC in NGC 3077. Astronomy and Astrophysics. 1989. vol. 211, L 19.}}