| 2011-10 | Orthogonal Stability of an Additive-Quadratic Functional Equation | 박춘길; Park, Choon kil |
| 2012-04 | Orthogonal stability of an additive-quartic functional equation with the fixed point alternative | 박춘길 |
| 2012-10 | Orthogonal stability of functional equations with the fixed point alternative | 박춘길 |
| 2013-07 | Orthogonality and quintic functional equations | 박춘길 |
| 2013-03 | Orthogonally additive and orthogonally quadratic functional equation | 박춘길 |
| 2012-06 | Orthogonally additive-additive and orthogonally quadratic-quadratic functional equation in orthogonality spaces | 박춘길 |
| 2020-06 | Oscillation criteria for a class of even-order neutral delay differential equations | 박춘길 |
| 2020-02 | Oscillation results for higher order differential equations | 박춘길 |
| 2020-10 | PERMUTING TRIDERIVATIONS AND PERMUTING TRIHOMOMORPHISMS IN BANACH ALGEBRAS | 박춘길 |
| 2020-09 | Phi-Contraction principle and an open problem in GV-fuzzy metric spaces | 박춘길 |
| 2014-08 | Proper CQ*-ternary algebras | 박춘길 |
| 2019-05 | QUADRATIC ρ-FUNCTIONAL INEQUALITIES IN BANACH SPACES | 박춘길 |
| 2019-07 | QUADRATIC (ρ1, ρ2)-FUNCTIONAL INEQUALITY IN FUZZY NORMED SPACES | 박춘길 |
| 2017-05 | Quadratic alpha-functional equations | 박춘길 |
| 2014-04 | Quadratic derivations on non-Archimedean Banach algebras | 박춘길 |
| 2011-05 | Quadratic double centralizers and quadratic multipliers | 박춘길 |
| 2016-10 | A QUADRATIC FUNCTIONAL EQUATION IN INTUITIONISTIC FUZZY 2-BANACH SPACES | 박춘길 |
| 2015-07 | Quadratic rho-functional inequalities in Banach spaces | 박춘길 |
| 2015-11 | QUADRATIC rho-FUNCTIONAL INEQUALITIES IN BANACH SPACES | 박춘길 |
| 2017-01 | Quadratic rho-functional inequalities in beta-homogeneous normed spaces | 박춘길 |
| 2016-12 | Quadratic rho-functional inequalities in complex matrix normed spaces | 박춘길 |
| 2017-03 | QUADRATIC rho-FUNCTIONAL INEQUALITIES IN FUZZY BANACH SPACES | 박춘길 |
| 2017-03 | QUADRATIC rho-FUNCTIONAL INEQUALITIES IN FUZZY NORMED SPACES | 박춘길 |
| 2016-10 | Quadratic rho-functional inequalities in non-Archimedean normed spaces | 박춘길 |
| 2015-07 | Quadratic rho-functional inequalities in non-Archimedean normed spaces | 박춘길 |
| 2016-05 | Quadratic rho-functional inequalities in normed spaces | 박춘길 |
| 2015-10 | RANDOM APPROXIMATION OF A GENERAL SYMMETRIC EQUATION | 박춘길 |
| 2014-01 | RANDOM DERIVATIONS ON RANDOM NORMED ALGEBRAS | 박춘길 |
| 2012-09 | Random homomorphisms and random derivations in random normed algebras via fixed point method | 박춘길 |
| 2012-01 | Random stability of a functional equation associated with inner product: a fixed point approach | 박춘길 |
