1. Karmazin A. P., “Prime pre-ends of spatial domains,” submitted to VINITI, 1992, No. 2220-B92.
2. Karmazin A. P., “The theory of pre-ends of spatial domains: factorization of pre-ends by their common socle,” submitted to VINITI, 1995, No. 1102-B95.
3. Karmazin A. P., “The main theorems of the theory of pre-ends for spatial domains,” Mat. Trudy, 1, No.2, 79–110 (1998).
4. Karmazin A. P., “Metric structures of spatial domains and the boundary behavior of quasi-isometries, ” submitted to VINITI, 1999, No. 3244-B99.
5. Karmazin A. P., Quasi-Isometries, the Theory of Pre-Ends, and Metric Structures of Spatial Domains [in Russian], Izdat. Surgut Univ., Surgut (2003).