1. Laboratory Manual for Introductiory Mycology;Alexopoulos CJ,1952
2. Apomixis in Plants;Asker SE,1992
3. Embryology and cytogenetics of Eupatorium pauciflorum and E;Bertasso-Borges MS;intermedium (Compositae). Genet Mol Biol,1998
4. Apomixis in two triploid brazilian species of Eupatorium: E;Coleman JR;bupleurifolium and E. callilepis. Rev Bras Genet,1984
5. Embryology and cytogenetics of apomictic triploid Eupatorium squalidum DC (Compositae);Coleman JR;Rev Bras Genet,1988