On the singular Bochner-Martinelli integral

The Bockner-Martinelli (B.-M.) kernel inherits, for n greater than or equal to 2, only some of properties of the Cauchy kernel in C. For instance it i s known that the singular B.-M. operator M-n is not an involution for n gre ater than or equal to 2. M. Shapiro and N. Vasilevski found a formula for ( 2)(M2) using methods of quaternionic analysis which are essentially complex -twodimensional. The aim of this article is to present a formula for M-n(2) for any n greater than or equal to 2. We use now Clifford Analysis but for n = 2 our formula coincides, of course, with the above-mentioned one.