Research Article
Stability of the Cubic Functional Equation in Menger Probabilistic Normed Spaces
Islamic Azad University, Ayatollah Amoli Branch, Amol, Iran
R. Saadati
Islamic Azad University, Ayatollah Amoli Branch, Amol, Iran
Gh. Sadeghi
Department of Mathematics, Ferdousi University of Mashhad, Mashhad, Iran
S.M. Vaezpour
Department of Mathematics and Computer Science, Amirkabir University of Technology, 424 Hafez Avenue, Tehran 15914, Iran