Volume 9, Issue 1, January 2021, Pages 1-3
10.34172/ijtmgh.2021.01
Peter P. Felkai
Volume 5, Issue 4, December 2017, Pages 113-118
10.15171/ijtmgh.2017.23
Peter Felkai; Gabor Debrődi
Volume 4, Issue 3, September 2016, Pages 73-75
10.21859/ijtmgh-040301