1. Lectures on Elliptic Boundary Value Problems;Agmon,1965
2. The Neumann's problem for differential forms on Riemannian manifolds;Conner;Mem. Amer. Math. Soc.,1956
3. Partial Differential Equations of Parabolic Type;Friedman,1964
4. Harmonic fields in Riemannian manifolds;Kodaira;Ann. of Math.,1949
5. Product and sum theorems for Whitehead Torsion;Kwun;Ann. of Math.,1965