1. i>One-loop quantum gravity from a worldline viewpoint
2. i>On high frequency background quantization of gravity;H. H. Von Borzeszkowski;Found. Phys.
3. i>Quantum theory of gravity. I. the canonical theory
4. i>Quantum theory of gravity. II. the manifestly covariant theory
5. P. A. Dirac, The lagrangian in quantum mechanics,