Authors
Dan Gregorian Fodor
Faculty of Mathematics “Al.I. Cuza” University Iaşi,, Iaşi, Romania
Marius Tărnăuceanu
Faculty of Mathematics “Al.I. Cuza” University Iaşi,, Iaşi, Romania
© 2017 Dan Gregorian Fodor, Marius Tărnăuceanu, published by Ovidius University of Constanta
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.