Hoffleit, D.; Jaschek, C. (1982). The Bright Star Catalogue. Fourth revised edition. (Containing data compiled through 1979) Yale University Observatory, New Haven, CT, USA.
[http://articles.adsabs.harvard.edu/full/1969AJ.....74..375C Cowley, Anne, Cowley, Charles, Jaschek, Mercedes & Jaschek, Carlos. "A study of the bright A stars. I. A catalogue of spectral classifications".] Astronomical Journal, 74(3):375 – 406. April, 1969.
Jaschek, Carlos; Jaschek, Mercedes. (1987). The Classification of stars.  Cambridge University Press. 1987. .
[http://articles.adsabs.harvard.edu/full/1980A%26AS...42..103J Jaschek, M.; Jaschek, C.; Hubert-Delplace, A.-M.; Hubert, H. "A classification of Be stars".] Astronomy and Astrophysics Supplement Series, 42:103–114. October, 1980.
Jaschek, Carlos; Conde, Horacio; de Sierra, Amelia C. "Catalogue of stellar spectra classified in the Morgan-Keenan system". Serie Astronomica, La Plata: Observatorio Astronomico de la Universidad de la Plata. 1964.