Authors
Marian Zaharia
“Petroleum – Gas” University of Ploiești, Romania
Rodica Manuela Gogonea
The Bucharest University of Economic Studies, Romania
Aniela Bălăcescu
“Constantin Brâncuşi” University of Târgu Jiu, Romania
Loredana Maria Păunescu
“Petroleum – Gas” University of Ploiești, Romania