Authors
Laszlo Balog
Department of Mathematics and Computer Science, North University Center at Baia Mare, Victorie1 76, 430122, Baia Mare, Romania
Vasile Berinde
Department of Mathematics and Computer Science, North University Center at Baia Mare, Victorie1 76, 430122, Baia Mare, Romania
Department of Mathematics and Statistics, King Fahd University of Petroleum and Minerals,, Dhahran, Saudi Arabia
Mădălina Păcurar
madalina.pacurar@econ.ubbcluj.ro
Department of Statistics, Analysis, Forecast and Mathematics, Faculty of Economics and Bussiness Administration, Babeş-Bolyai University of Cluj-Napoca,, Cluj-Napoca, Romania