Inventing a Space MissionVincent Minier, Roger-Maurice Bonnet, Vincent Bontems, Thijs de Graauw, Matt Griffin, Frank Helmich, Göran Pilbratt, Sergio Volonte · First published 2017Open the Tome
Advances in far-infrared astrophysicsFrank P. Helmich, P. R. Wesselius · First published 2007Open the Tome
Dense molecular gas around massive young starsFrank Paul Helmich · First published 1966 · Latest edition 1996Open the Tome
