Engels, D.; Jiménez-Esteban, F. (2007). Lifetime of OH masers at the tip of the asymptotic giant branch. Astronomy & Astrophysics, 475(3), 941–948.
doi:10.1051/0004-6361:20078250
url to share this paper:
An interview with Sci-Hub Founder Alexandra Elbakyan Who exactly should pay for academic research