Fuente: Filomat, 2019, 33(10), 3203-3208

 Publisher: Faculty of Sciences and Mathematics, University of Nis (Serbia)

 Year of publication: 2019

 No. of pages: 6

 Publication type: Article

 ISSN: 0354-5180,2406-0933

 Spanish project: MINCINMTM2016-76958

 Publication Url: https://doi.org/10.2298/FIL1910203C