1. Bateman Manuscript Project;Erdelyi,1953
2. Über die Torsion einer Überdeckung;Franz;J. Reine Angew. Math.,1935
3. Harmonic forms and heat conduction;Milgram,1951
4. A duality theorem for Reidemeister torsion;Milnor;Ann. of Math.,1962
5. Whitehead torsion;Milnor;Bull. Amer. Math. Soc.,1966