H.  Steinkellner, Lexer, C., Turetschek, E., and Glossl, J., ?Conservation of (GA)n microsatellite loci between Quercus species?, Molecular Ecology, vol. 6, pp. 1189-1194, 1997.

, Joandet, S., Laigret, F., and Kremer, A., ?Detection of genomic regions differentiating two closely related oak species Quercus petraea (Matt.) Liebl. and Quercus robur L?, Heredity, vol. 78, pp. 433-444, 1997.

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.

D.  Howard, Preszler, R., Williams, J., Fenchel, S., and Boecklen, W., ?How discrete are oak species? Insights from a hybrid zone between Quercus grisea and Quercus gambelii.?, Evolution, vol. 51, pp. 747 - 755, 1997.

A. M.  Montalvo, Conard, S. G., Conkle, M. T., and Hodgskiss, P. D., ?Population structure, genetic diversity, and clone formation in Quercus chrysolepis (Fagaceae)?, American Journal of Botany, vol. 84, p. 1553-, 1997.