1. Nematophagus fungi: Helicocephalum;Barron;Transaction of the British Mycological Society,1975
2. The merosporangiferous Mucorales;Benjamin;Aliso,1959
3. Zygomycetes and their spores;Benjamin,1979
4. Zygomycetes;Benny,1982
5. Zygomycota: Zygomycetes;Benny,2001