| Issue Date | Title | Author(s) | Type | Access Type |
| 2010 | Existence and multiplicity of solutions for resonant nonlinear Neumann problems | Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile | article |  |
| 2010 | Multiple nontrivial solutions for doubly resonant periodic problems | Papageorgiou, Nikolaos S.; Staicu, Vasile | article | |
| 2020 | Multiple solutions with sign information for (p, 2)−equations with asymmetric resonant reaction | Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile | article |  |
| Jul-2017 | Nonlinear Dirichlet problems with double resonance | Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile | article | |
| 21-Dec-2015 | Nonlinear periodic problems with a jumping reaction | Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile | article | |
| 2019 | Nonlinear periodic systems with unilateral constraints | Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile | article | |
| 1-Mar-2011 | Nonlinear resonant periodic problems with concave terms | Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile | article | |
| 2023 | Nonlinear Robin problems with locally defined reaction | Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile | article | |
| Sep-2016 | Nonlinear, nonhomogeneous parametric Neumann problems | Aizicovici, S.; Papageorgiou, Nikolaos S.; Staicu, Vasile | article | |
| 2010 | Nontrivial solutions for nonvariational quasilinear neumann problems | Papageorgiou, Nikolaos S.; Santos, Sandrina R. A.; Staicu, Vasile | article | |
| 2016 | On (p, q) − equations with concave terms | Papageorgiou, Nikolaos S.; Santos, Sandrina R. A.; Staicu, Vasile | article | |
| 2013 | On p-superlinear equations with a nonhomogeneous differential operator | Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile | article | |
| Dec-2011 | On resonant Neumann problems: Multiplicity of solutions | Papageorgiou, Nikolaos S.; Santos Coelho Rodrigues, Ana Isabel; Staicu, Vasile | article | |
| 15-Sep-2011 | Positive solutions for nonlinear periodic problems with concave terms | Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile | article | |
| 2016 | Positive solutions for parametric Dirichlet problems with indefinite potential and superdiffusive reaction | Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile | article | |
| 2016 | Semilinear neumann equations with indefinite and unbounded potential | Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile | article | |
| 2018 | Sensitivity analysis of parametric elliptic optimal control | Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile | article | |