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04-Information Sciences Letters
An International Journal
               
 
 
 
 
 
 
 
 
 
 
 
 

Author
 
   
Name : A. S. Situmorang
Address : Department of Mathematics, Doctoral Graduate School of Mathematics, Universitas Sumatera Utara, Medan, 20155, Indonesia\\ Department of Mathematics Education, Universitas HKBP Nommensen, Medan, 20234, Indonesia
Email : N/A
Telephone :

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