1. Gevrey classes and hypoelliptic boundary value problems;Artino,1971
2. J. Barros-Neto, “On regular hypoelliptic boundary problem,” to appear.
3. J. Barros-Neto, “Fundamental solutions to regular hypoelliptic boundary value problems,” to appear.
4. Kernels associated to general elliptic problems;Barros-Neto;J. Functional Analysis,1969
5. On Poisson's kernels;Barros-Neto;An. Acad. Brasil. Ci.,1970