TY - JOUR AU - Gonzalo H. Ibañez Firnkorn AU - María Silvina Riveros TI - Certain fractional type operators with Hörmander conditions JO - Annales Fennici Mathematici PY - 2018 SP - 913 EP - 929 VL - 43 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.2018.4353/ DO - 10.5186/aasfm.2018.4353 LA - en ID - AFM_2018_43_2_a17 ER -