Articles in Scholarly Journals [Incomplete List]

1. Stability of the orthogonality preserving property in finite-dimensional inner product spaces?
   Journal of Mathematical Analysis and Applications, vol. 318, no. 2, pp. 433–443, 2006
2. Orthogonality preserving property, Wigner equation, and stability
   Journal of Inequalities and Applications, vol. 2006, Article ID 76489, 9 pages, 2006
3. Linear mappings approximately preserving orthogonality
   Journal of Mathematical Analysis and Applications, vol. 304, no. 1, pp. 158–169, 2005
4. Decomposition of mappings approximately inner product preserving
   Nonlinear Analysis, vol. 62, no. 6, pp. 1015–1023, 2005
5. On a singular case in the Hyers–Ulam–Rassias stability of the Wigner equation
   Journal of Mathematical Analysis and Applications, vol. 289, no. 2, pp. 571–583, 2004
6. The Stability of the Wigner Equation on a Restricted Domain
   Journal of Mathematical Analysis and Applications, vol. 254, no. 1, pp. 309–320, 2001
7. Almost approximately inner product preserving mappings
   Aequationes Mathematicae, vol. 59, no. 3, pp. 214–221, 2000
8. On mappings preserving inner product modulo an ideal
   Archiv der Mathematik, vol. 73, no. 3, pp. 186–192, 1999
9. On a conditional Wigner equation
   Aequationes Mathematicae, vol. 56, no. 2, p. 143, 1998
10. On approximate solutions of the Pexider equation
    Aequationes Mathematicae, vol. 46, no. 1-2, pp. 143–163, 1993