@article{GDZPPN002487292,
title = {A Heat Semigroup Version of Bernstein's Theorem on Lie Groups.},
journal = {Monatshefte f\"ur Mathematik},
volume = {109},
year = {1990},
pages = {101-114},
zbl = {0719.43008},
url = {http://dml.mathdoc.fr/item/GDZPPN002487292}
}
Gaudry, G.I.; Meda, S.; Pini, R. A Heat Semigroup Version of Bernstein's Theorem on Lie Groups.. Monatshefte für Mathematik, Tome 109 (1990) pp. 101-114. http://gdmltest.u-ga.fr/item/GDZPPN002487292/