@article{05242339,
title = {Nonexistence of a geometric progression that contains four triangular numbers.},
journal = {Integers},
volume = {7},
year = {2007},
zbl = {1195.11043},
language = {en},
url = {http://dml.mathdoc.fr/item/05242339}
}
Fang, Jin-Hui. Nonexistence of a geometric progression that contains four triangular numbers.. Integers, Tome 7 (2007) . http://gdmltest.u-ga.fr/item/05242339/