A three-position spectral line survey of Sagittarius B2 between 218 and 263 GHzA. Nummelin, Bergman, Per (Astronomer), Åke Hjalmarson, Per G. Friberg, William M. Irvine, T. J. Millar, M. Ohishi, Saito, Shinji (Physicist) · First published 1998Open the Tome
Physics and chemistry of interstellar molecular cloudsPer G. Friberg · First published 1983Science FictionOpen the Tome
