Bull. Korean Math. Soc. 2019; 56(2): 383-390
Online first article October 30, 2018 Printed March 1, 2019
https://doi.org/10.4134/BKMS.b180279
Copyright © The Korean Mathematical Society.
Gabriel Macsim, Adela Mihai, Andreea Olteanu
University of Bucharest; Technical University of Civil Engineering; University of Agronomic Sciences and Veterinary Medicine of Bucharest
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