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• Degree theory for the sum of VMO maps and maximal monotone maps

  Yuqing Chen, Donal O‘Regan, Ravi P. Agarwal

  119–126

  2011-06-01

• Existence of Periodic Solutions for a Class of Second-Order Neutral Differential Equations with Multiple Deviating Arguments

  Chengjun Guo, Donal O‘Regan, Ravi P. Agarwal

  153–165

  2010-10-01

• Strong vector equilibrium problems in topological vector spaces via KKM maps

  A.P. Farajzadeh, A. Amini-Harandi, D. O‘Regan, R.P. Agarwal

  219–230

  2010-03-01

• Multiple Solutions for Doubly Resonant Elliptic Problems Using Critical Groups

  Ravi P. Agarwal, Michael E. Filippakis, Donal O‘Regan, Nikolaos S. Papageorgiou

  21–41

  2008-10-01

• Triple solutions of constant sign for a system of fredholm integral equations

  Ravi P. Agarwal

  1-45

  2004-10-01