Huang Wei-hong, Shen You-gen, “Quantum cosmology with conformal scalar field in the Vilenkin theory”, Chinese Astronomy and Astrophysics, 16, № 2, 1992, 124
Zhen-Qiang Tan, You-Gen Shen, “Wormholes and large-scale topology of the Universe”, Nuovo Cim B, 111, № 12, 1996, 1433
M. Gasperini, G. Ummarino, “Adiabatic perturbations and minimal size of the de Sitter vacuum”, Physics Letters B, 266, № 3-4, 1991, 275
Irina Aref’eva, Igor Volovich, “Gas of Baby Universes in JT Gravity and Matrix Models”, Symmetry, 12, № 6, 2020, 975
M.D. Pollock, “On the zero-action hypothesis in the theory of wormholes”, Nuclear Physics B, 355, № 1, 1991, 133