R. J.  Jensen, ?Lectotypification of Quercus ellipsoidalis E.J. Hill?, Taxon, vol. 29, pp. 154-155, 1979.

R. J.  Jensen, ?A preliminary numerical analysis of the red oak complex in Michigan and Wisconsin USA?, Taxon, vol. 26, pp. 399-407, 1977.

R. J.  Jensen, ?Numerical analysis of the scarlet oak complex (Quercus subgen. Erythrobalanus) in the eastern United states: relationships above the species level?, Systematic Botany, vol. 2, pp. 122-133, 1977.

S. C.  Hokanson, Isebrands, J. G., Jensen, R. J., and Hancock, J. F., ?Isozyme variation in oaks of the Apostle Islands in Wisconsin: Genetic structure and levels of inbreeding in Quercus rubra and Q. ellipsoidalis (Fagaceae)?, American Journal of Botany, vol. 80, pp. 1349-1357, 1993.

R. J.  Jensen, ?The Quercus falcata Michx. complex in Land Between the Lakes, Kentucky and Tennessee: a study of morphological variation?, American Midland Naturalist, vol. 121, pp. 245-255, 1989.

R. J.  Jensen, ?Geographic spatial autocorrelation in Quercus ellipsoidalis?, Bulletin of the Torrey Botanical Club, vol. 4, pp. 431-439, 1986.

R. J.  Jensen, Depiero, R., and Smith, B. K., ?Vegetative characters, population variation, and the hybrid origin of Quercus ellipsoidalis?, American Midland Naturalist, vol. 111, pp. 364-370, 1984.

R. J.  Jensen, ?Flora of North America, North of Mexico?, vol. 3, Fo.N. A. E.  Committee, Ed. New York: Oxford University Press, 1997, pp. 447-468.

A.  Biagi and Jensen, R. J., ?The Genus Quercus (Fagaceae) in Indiana: Phytogeography and a Key to the Species?, Indiana Academy of Science, vol. 104, pp. 11-24, 1995.