TY - JOUR TI - Lower bounds for pseudo-differential operators JO - Annales de l'Institut Fourier PY - 1990 DA - 1990/// SP - 657 EP - 682 VL - 40 IS - 3 PB - Imprimerie Louis-Jean PP - Gap UR - https://aif.centre-mersenne.org/articles/10.5802/aif.1227/ UR - https://www.ams.org/mathscinet-getitem?mr=92a:35172 UR - https://zbmath.org/?q=an%3A0703.35182 UR - https://doi.org/10.5802/aif.1227 DO - 10.5802/aif.1227 LA - en ID - AIF_1990__40_3_657_0 ER -