1. V. V. Boronoyev and E. V. Shabanova,Izm., Tekh., No. 11, 60 (1994).
2. V. V. Vershinin, Yu. S. Zav’yalov, and N. N. Pavlov,Experimental Properties of Splines and the Problem of Smoothing [in Russian], Nauka, Novosibirsk (1988).
3. G. Korn and T. Korn,Handbook of Mathematics [Russian translation], Nauka, Moscow (1973).
4. V. S. Logvinov, in:Pulse Diagnostics in Tibetan Medicine (Ch. Ts. Tsydypov, ed.) [in Russian], Nauka, Novosibirsk (1988).
5. Interfacing Sensors and Data Input Devices with IBM PC Computers (W. Tomkins and G. Webster, eds.) [Russian translation], Mir, Moscow (1992).