Calder\'{o}n commutators and the Cauchy integral on Lipschitz curves revisited II. Cauchy integral and generalizations

This article is the second in a series of three papers, whose scope is to give new proofs to the well known theorems of Calder\'{o}n, Coifman, McIntosh and Meyer. Here we treat the case of the Cauchy integral on Lipschitz curves and some of its generalizations.