Les Chênes Monographie du Genre Quercus. 2 vols. Lechevalier and Fils, Paris (cited as 1936-1938, but not released until, 1938. ,
Die flora des Bernsteins Zweiter Band History and implications of the early North American fossil record of Fagaceae, Evolution, Systematics, and Fossil History of the Hamamelidae.Higher' Hamamelidae (Crane PR, pp.45-66, 1986. ,
Earliest Megafossil Evidence of Fagaceae: Phylogenetic and Biogeographic Implications, American Journal of Botany, vol.76, issue.6, pp.842-855, 1989. ,
DOI : 10.2307/2444540
Extinct Transitional Fagaceae from the Oligocene and their Phylogenetic Implications, American Journal of Botany, vol.76, issue.10, pp.1493-1505, 1989. ,
DOI : 10.2307/2444437
Oak Catkins, Leaves and Fruits from the Oligocene Catahoula Formation and Their Evolutionary Significance, American Journal of Botany, vol.70, issue.5, pp.639-649, 1983. ,
DOI : 10.2307/2443119
1835-1838) Arboretum et Fruticetum Botanicum ,
DOI : 10.5962/bhl.title.120966
A Biosystematic Study of Quercus Series Virentes with Phylogenetic Analyses of Fagales, Fagaceae and Quercus. Ph D Dissertation Origins of Fagaceae, Syst Assoc Spec vol 40B. Evolution, Systematics and Fossil History of the Hamamelidae, pp.23-43, 1984. ,
Trigonobalanus (Fagaceae): Taxonomic Status and Phylogenetic Relationships, American Journal of Botany, vol.76, issue.6, pp.826-841, 1989. ,
DOI : 10.2307/2444539
Manual of the Trees of North America (Exclusive of Mexico), 1922. ,
Entwurf zu einem naturlichen System der Cupuliferen und der Gattung Quercus L, Notizblatt des K??nigl. botanischen Gartens und Museums zu Berlin, vol.13, issue.116, pp.1-22, 1936. ,
DOI : 10.2307/3994908
Pollen Morphology and Plant Taxonomy of White Oaks in Eastern North America, American Journal of Botany, vol.70, issue.4, pp.481-494, 1983. ,
DOI : 10.2307/2443159
Pollen Morphology and Plant Taxonomy of Red Oaks in Eastern North America, American Journal of Botany, vol.70, issue.4, pp.495-507, 1983. ,
DOI : 10.2307/2443160
Taxonomic Literature, 1976. ,