TY - JOUR TI - On global hypoellipticity PY - 2012 AU - Bergamasco, Adalberto Panobianco AU - Mendoza, G. A AU - Zani, Sérgio Luís T2 - Communications in Partial Differential Equations SN - 0360-5302 DO - 10.1080/03605302.2011.641054 UR - https://doi.org/10.1080/03605302.2011.641054 PP - Philadelphia VL - 37 IS - 9 SP - 1517-1527 ER -