@article{02097486,
title = {Infinite sets of positive integers whose sums are free of powers.},
journal = {Revista Colombiana de Matem\'aticas},
volume = {36},
year = {2002},
pages = {67-70},
zbl = {1058.11027},
language = {en},
url = {http://dml.mathdoc.fr/item/02097486}
}
Luca, Florian. Infinite sets of positive integers whose sums are free of powers.. Revista Colombiana de Matemáticas, Tome 36 (2002) pp. 67-70. http://gdmltest.u-ga.fr/item/02097486/