Books •
Seifert Manifolds, Lecture Notes in Mathematics 291, Springer Verlag, 1972 • as editor:
Singularities, 2 vols., American Mathematical Society, 1983 •
Introduction to Arrangements, CBMS Regional Conference Series, American Mathematical Society, 1989 • • • with Volkmar Welker:
Algebraic Combinatorics. Lectures at a Summer School in Nordfjordeid, Norway, June 2003, Universitext, Springer Verlag, 2007
Articles • with
Colin P. Rourke: • with
John Milnor: • with Frank Raymond: • with Philip Wagreich: •
The multiplicity of a holomorphic map at an isolated critical point, in
Real and complex singularities, Oslo: Sijthoff and Noordhoff, 1977, 405–474 • • with Louis Solomon: • with Daniel C. Cohen: ==References==