Machiko Hatsuda, Peter van Nieuwenhuizen, Walter Troost, Antoine Van Proeyen, “The regularized phase space path integral measure for a scalar field coupled to gravity”, Nuclear Physics B, 335:1 (1990), 166
G. W. Gibbons, J. B. Hartle, “Real tunneling geometries and the large-scale topology of the universe”, Phys. Rev. D, 42:8 (1990), 2458
Enrique Alvarez, “Quantum gravity: an introduction to some recent results”, Rev. Mod. Phys., 61:3 (1989), 561
James B. Hartle, “Simplical minisuperspace. III. Integration contours in a five-simplex model”, Journal of Mathematical Physics, 30:2 (1989), 452
Kristin Schleich, “Conformal rotation in Bianchi type-I quantum cosmology”, Phys. Rev. D, 39:8 (1989), 2192
Bernd A. Berg, Particle Physics and Astrophysics Current Viewpoints, 1989, 223
Jorma Louko, “Semiclassical path measure and factor ordering in quantum cosmology”, Annals of Physics, 181:2 (1988), 318
D.A. Johnston, “Sedentary ghost poles in higher derivative gravity”, Nuclear Physics B, 297:4 (1988), 721
Sergio Caracciolo, Andrea Pelissetto, “Phases and topological structures of de Sitter lattice gravity”, Nuclear Physics B, 299:4 (1988), 693
Sergio Caracciolo, Andrea Pelissetto, “Nonperturbative lattice gravity”, Nuclear Physics B - Proceedings Supplements, 4 (1988), 78