1. The particular maternal effect of propagule size, especially egg size: patterns, models, quality of evidence and interpretations;Bernardo;American Zoologist,1996
2. An interspecific relationship between egg size and clutch size in birds;Blackburn;Auk,1991a
3. The interspecific relationship between egg size and clutch size in wildfowl;Blackburn;Auk,1991b
4. Phylogenies and the comparative method;Felsenstein;American Naturalist,1985
5. Felsenstein , J. 1995 http://evolution.genetics.washington.edu/phylip.html.