1. The heat equation with singular coefficients. I. Operators of the form -𝑑²/𝑑𝑥²+𝜅/𝑥² in dimension 1;Callias, Constantine J.;Comm. Math. Phys.,1983
2. [C2] C. Callias, Asymptotics of the heat kernel for Schrödinger operators with isolated singularities in the coefficients, 1982 (preprint).
3. The resolvent and the heat kernel for some singular boundary problems;Callias, Constantine J.;Comm. Partial Differential Equations,1988
4. [CM] C. Callias and X. Markenscoff, Singular asymptotics of integrals and the near field radaited from a non-uniformly moving dislocation, Ninth U. S. Congress of Applied Mechanics, Cornell Univ., June 1982.
5. Functional determinants in Euclidean Yang-Mills theory;Callias, Constantine;Comm. Math. Phys.,1980