| Institution: | 1. University of Gunma, Hoshikuki-cho 798-8, Chuou-Ward, Chiba 260-0808, Japan;2. Department of Mathematics and Computer Science, ?stanbul Kültür University, ?stanbul, Turkey;3. Department of Mathematics, Rzeszów University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland;4. Department of Applied Mathematics, College of Natural Sciences, Pukyong National University, Pusan 608-737, Republic of Korea;5. Department of Mathematics, Kinki University, Higashi-Osaka, Osaka 577-8502, Japan |
