Applegate, James H. (1992). “A mechanism for orbital period modulation in close binaries”. Astrophysical Journal, Part 1385: 621–629. Bibcode:1992ApJ...385..621A. doi:10.1086/170967.
Applegate, James H. (1992). “A mechanism for orbital period modulation in close binaries”. Astrophysical Journal, Part 1385: 621–629. Bibcode:1992ApJ...385..621A. doi:10.1086/170967.