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}
}