@article {96, title = {Morphological variability of oaks (Quercus robur L., Quercus petraea (Matt.) Liebl., Quercus pubescens Willd.) in northeastern France: preliminary results}, journal = {Annales des Sciences Forestieres}, volume = {50}, year = {1993}, note = {doi:10.1051/forest:19930702}, month = {1993}, pages = {35 - 40}, author = {Dupouey, J. and Badeau, V.} }