Peak Sets in Pseudoconvex Domains with Isolated Degeneracies. Andrei Iordan (1984/1985) Mathematische Zeitschrift
Projective Connections in CR Geometry. Dan, Jr. Burns, Steven Shnider (1980/1981) Manuscripta mathematica
Properties of Peak Sets in Weakly Pseudoconvex Boundaries in C2. Alan V. Noell (1984) Mathematische Zeitschrift