1
Έκδοση 1991
Full text available from East Europe, Central Europe Database: 01/01/2008 to present
Full text available from Engineering Database: 01/01/2008 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
3
Full text available from Earth, Atmospheric & Aquatic Science Database: 01/01/2014 to present
Full text available from Engineering Database: 01/01/2014 to present
Ηλεκτρονική πηγή Περιοδική έκδοση