Algebraic shifting and sequentially Cohen-Macaulay simplicial complexes. Duval, Art M. — 1996 The Electronic Journal of Combinatorics [electronic only]
A common recursion for Laplacians of matroids and shifted simplicial complexes. Duval, Art M. — 2005 Documenta Mathematica
A relative Laplacian spectral recursion. Duval, Art M. — 2006 The Electronic Journal of Combinatorics [electronic only]