A. Del Monte, "Study of the intramolecular vibrational relaxation by the continued fraction Green function method," Ph.D thesis (2003); A. Callegari, "Intramolecular vibrational energy redistribution in aromatic molecules," Ph.D thesis (1998). Del Monte (デルモンテ)のD論は数ページ打ち出せないところがあるので注意。