Ishida, K.; Othman, M. (1988). "Surface distribution of M stars with different IRAS colour". Astrophysics and Space Science. 148 (2): 239. Bibcode:1988Ap&SS.148..239I. doi:10.1007/BF00645963.
harvard.edu
ui.adsabs.harvard.edu
Ishida, K.; Othman, M. (1988). "Surface distribution of M stars with different IRAS colour". Astrophysics and Space Science. 148 (2): 239. Bibcode:1988Ap&SS.148..239I. doi:10.1007/BF00645963.