1. Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania
2. Regional Directorate of Road and Bridge from Iasi, 700481 Iasi, Romania
3. Department of Soil Amelioration, Faculty of Agriculture, The University of Zagreb, 10000 Zagreb, Croatia
4. Department of Pedotechnics, Faculty of Agriculture, Iasi University of Life Sciences, 700490 Iasi, Romania
5. Department of Land Surveys and Exact Sciences, Faculty of Forestry and Cadastre, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania