V. Z. Enolski, T. Grava Thomae type formulae for singular Z_N curves math-ph/0602017
A. Michelangeli Born approximation in the problem of the rigorous derivation of the Gross-Pitaevskii equation
in: Festshrift in honour of A. Di Giacomo, Edizioni Plus, Pisa University
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SISSA preprint 13/2006/FM Sissa Digital Library 13/2006/MP
O. Zagordi, A. Michelangeli 1D periodic potentials with vanishing gaps at k=0
SISSA preprint 12/2006/FM