@article{AM2_1996__52_1-2_137652,
     author = {A. J\'arai and L. Sz\'ekelyhidi},
     title = {Regularization and general methods in the theory of functional equations.},
     journal = {Aequationes mathematicae},
     pages = {10--29},
     publisher = {mathdoc},
     volume = {52},
     number = {1-2},
     year = {1996},
     zbl = {0858.39010},
     url = {http://geodesic.mathdoc.fr/item/AM2_1996__52_1-2_137652/}
}