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You are here: Home Departments Mathematical Analysis Prof. Nadejda Ribarska, Ph. D. Publications of Assoc. Prof. Nadejda Ribarska, Ph. D.

Publications of Assoc. Prof. Nadejda Ribarska, Ph. D.


  1. P.S.Kenederov, N.K.Ribarska, Generic uniqueness of the solutions of “max min” problems, Lecture Notes in Economics and Mathematical Systems, 304, 41-48.
  2. P.S.Kenderov, N.K.Ribarska, Most of the two-person zero-sum games have unique solutions, Proceedings of the Centre for Mathematical Analysis, Australian National University, 20(1988), 73-82.
  3. N.K.Ribarska, Internal characterization of fragmentable spaces, C.R. Acad. Bulg. Sci., vol.40, no.12 (1987), 9-10.
  4. N.K.Ribarska, Internal characterization of fragmentable spaces, Mathematika, 34(1987), 243-257.
  5. N.K.Ribarska, A Radon-Nikodym compact which is not a Gruenhage space, C.R.Acad. Bulgare Sci., 41, no. 7(1988), 9-11.
  6. N.K.Ribarska, A note on fragmentability of some topological spaces, C.R.Acad. Bulgare Sci., 43(1990), 13-15.
  7. N.K.Ribarska, The dual of a Gateaux smooth Banach space is weak star fragmentable, Proceedings of the AMS, 114, no.4(1992), 1003-1008.
  8. N.K.Ribarska, Ts.Y.Tsachev, M.I.Krastanov, On the general mountain pass principle of Ghoussoub-Preiss, Mathematica Balkanica, 5(1991), 350-358.
  9. N.K.Ribarska, Ts.Y.Tsachev, M.I.Krastanov, Deformation lemma, Ljusternik-Schnirellmann theory and mountain pass theorem on C1-Finsler manifolds, Serdica Math. J. 21(1995), 239-266.
  10. N.K.Ribarska, Ts.Y.Tsachev, M.I.Krastanov, Speculating about mountains, Serdica Math. J. 22(1996), 341-358.
  11. Ribarska N., Three space property for  -fragmentability, Mathematika, 45(1998), 113-118.
  12. N.K.Ribarska, Ts.Y.Tsachev, M.I.Krastanov, Saddle Point theorem without finite dimensional closed loop, C.R. Acad. Bulg. Sci., vol.51, no.11-12 (1998), 13-16.
  13. N.K.Ribarska, Ts.Y.Tsachev, M.I.Krastanov, The intrinsic mountain pass principle, C.R. Acad. Sci., Paris, Ser.I, Math., vol.329, no.5 (1999), 399-404.
  14. N.K.Ribarska, Ts.Y.Tsachev, M.I.Krastanov, The intrinsic mountain pass principle, Topological Methods in Nonlinear Analysis, vol.12, no.2 (1998), 309-322.
  15. N.K.Ribarska, On the property “countable cover by sets of small local diameter”, Studia Mathematica 140, 2 (2000), 99-116.
  16. N.K.Ribarska, Ts.Y.Tsachev, M.I.Krastanov, A note on “On a critical point theory for multivalued functionals and applications to partial differential inclusions”, Nonlinear Analysis 43 (2001), 153-158.
  17. N.K.Ribarska, V.D.Babev, A stability property for locally uniformly rotund renorming, to appear in Mathematika.
  18. Degiovanni M, Lucchetti R, Ribarska N., Critical point theory for vector valued functions, JOURNAL OF CONVEX ANALYSIS 9 (2): 415-428 2002

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