1. Consensus techniques and the comparison of taxonomic trees;Systematic Zoology,1972
2. Iberosuchus, crocodile Sebecosuchien nouveau, l'Eocène ibérique au nord de la Chaîne Centrale, et l'origine du canyon de Nazaré;Comunicaçoes Dos Servicos Geologicos de Portugal,1975
3. Archosaur phylogeny and the relationships of the Crocodylia,1988
4. The limits of amino-acid sequence data in angiosperm phylogenetic reconstruction;Evolution,1988
5. Phylogenetics, taxonomy, and historical biogeography of Alligatoroidea;Memoirs of the Society of Vertebrate Paleontology,1997