Authors
Bogdan Postolachi
University of Petrosani, Department of Mining Engineering, Surveying and Constructions, Romania
Ovidiu Marina
University of Petrosani, Department of Mining Engineering, Surveying and Constructions, Romania
Dacian-Paul Marian
University of Petrosani, Department of Mining Engineering, Surveying and Constructions, Romania
Ilie Onica
University of Petrosani, Department of Mining Engineering, Surveying and Constructions, Romania