1. Kurtz, D.W., 1984, NASA CP-2350, 56.
2. Kurtz, D.W., 1990, ARA&A, v.28, 607.
3. Martinez, P., Kurtz, D.W., 1995, ASP CS v.83, 58.
4. Martinez, P., 1993a, Ph.D. Thesis, Univ. of Cape Town.
5. Renson, P., 1991, Catalogue General des Etoiles Ap et Am.