de Vaan, Michiel. 1999. The PIE root structure *Te(R)Dh-. Historische Sprachforschung 112. 1-25.
@article{jacquesestimative-vaan99terdh, author = {de Vaan, Michiel}, journal = {Historische Sprachforschung}, pages = {1-25}, title = {The PIE root structure *Te(R)Dh-}, volume = {112}, year = {1999} }