@article{article531c8511,
title   = {Global hypoellipticity of sums of squares on compact manifolds},
author = {Araújo, Gabriel Cueva Candido Soares de and Ferra, Igor Ambo and Ragognette, Luis Fernando},
year = {2024},
doi = {10.1017/S147474802300049X},
journal   = {Journal of the Institute of Mathematics of Jussieu}
}