scholarly article

scholarly article

article

September 2018 scholarly article in Letters of the Astrophysical Journal

scientific article

scientific article published in January 1971

scientific article published in January 1973

scientific article published in January 1971

scientific article

scientific article published in Astronomical Journal

scholarly article

scientific article published in January 2006

scientific article

scientific article

scholarly article

scientific article published in January 1988

scientific article published in January 1994

article

scientific article published in January 1980