https://www.aanda.org/articles/aa/ref/2005/42/aahh031/aahh031.html
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
methanol maserringshapedghzemission
https://www.aanda.org/articles/aa/ref/2013/08/aa21501-13/aa21501-13.html
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
methanol maserevnobservationsghzpolarization