• KIM, SEON-BU (Dept. of Mathematics, Chonnam National University) ;
  • KIM, JEONG-SIK (Dept. of Mathematics, Chonnam National University) ;
  • LEE, EUN-JU (Dept. of Mathematics, Chonnam National University)
  • Received : 1995.05.25
  • Published : 1995.07.30




Supported by : Ministry of Education


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