- Thomas Klösch, Thomas Strobl, “Classical and quantum gravity in 1 + 1 dimensions. II: The universal coverings”, Class. Quantum Grav., 13, № 9, 1996, 2395
- I.Ya. Aref'eva, B.G. Dragovic, I.V. Volovich, “Open and closed p-adic strings and quadratic extensions of number fields”, Physics Letters B, 212, № 3, 1988, 283
- C. Bizdadea, E. M. Cioroianu, S. O. Saliu, S. C. Săraru, M. Iordache, “Four-dimensional couplings among BF and massless Rarita–Schwinger theories: a BRST cohomological approach”, Eur. Phys. J. C, 58, № 1, 2008, 123
- Harald Grosse, Wolfgang Kummer, Peter Prešnajder, Dominik J. Schwarz, “Novel symmetry of non-Einsteinian gravity in two dimensions”, Journal of Mathematical Physics, 33, № 11, 1992, 3892
- Mihail O. Katanaev, “Geometric theory of defects”, Uspekhi Fizicheskikh Nauk, 175, № 7, 2005, 705
- Daniel Grumiller, Robert McNees, Jakob Salzer, 178, Quantum Aspects of Black Holes, 2015, 27
- H. Grosse, W. Kummer, P. Prešnajder, D. J. Schwarz, “Non-linear gauge symmetry in R2-gravity in two dimensions”, Czech J Phys, 42, № 12, 1992, 1325
- Jan Govaerts, Simone Zonetti, “Quantized cosmological constant in 1+1 dimensional quantum gravity with coupled scalar matter”, Class. Quantum Grav., 28, № 18, 2011, 185001
- Yuri N Obukhov, Sergey N Solodukhin, Eckehard W Mielke, “Coupling of lineal Poincaré gauge gravity to scalar fields”, Class. Quantum Grav., 11, № 12, 1994, 3069
- M. O. Katanaev, “New constraints in dynamical torsion theory”, Gen Relat Gravit, 25, № 4, 1993, 349