Pérez, C., I. P. Rivera-Ríos, and L. Roncal. “A_1 Theory of Weights for Rough Homogeneous Singular Integrals and Commutators”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, vol. 19, no. 1, Feb. 2019, pp. 169-90, doi:10.2422/2036-2145.201608_011.