1. Farris JS (1988) HENNIG 86
v. 1.5 program and documen tation. Port Jefferson, NY
2. Swofford DL (1993) PAUP: Phylogenetic analysis using parsimony
v . 3.1.1, program and documentation, Illinois
3. Goloboff PA (1994b) Nona
v. 1.5.1 program and documentation. Available atftp.unt.edu.ar/pub/parsimony
4. Wheeler WC (1996) Optimization alignment: the end of multiple sequence alignment in phylogenetics? Cladistics 12: 1–9
5. Swofford D, Olsen G (1990) Phylogeny reconstruction. In: D Hillis and C Moritz (eds.): Molecular Systematics. 411–501