1. Brézis, H.: Analyse fonctionnelle : théorie et applications. Éditions Dunod, Paris (1999)
2. Beals, R.: $$L^p$$ L p and Hölder estimates for pseudo-differential operators: sufficient conditions. Annales de l’institut Fourier. 29(3), 239–260 (1979)
3. Cardona, D.: Estimativos $$L^2$$ L 2 para una clase de operadores pseudodiferenciales definidos en el toro. Rev. Integr. Temas Mat. 31(2), 147–152 (2013)
4. Delgado, J.: $$L^p$$ L p bounds for pseudo-differential operators on the torus. Oper. Theory Adv. Appl. 231, 103–116 (2012)
5. Katznelson, Y.: An introduction to Harmonic Analysis. Cambridge University Press (2004)