1
Έκδοση 1976
Full text available from Earth, Atmospheric & Aquatic Science Database: 02/01/2003 to 12/31/2018
Full text available from Science Database: 02/01/2003 to 12/31/2018
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
2
Έκδοση 2011
Full text available from Earth, Atmospheric & Aquatic Science Database: 04/01/2018 to present
Full text available from Research Library: 04/01/2018 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
3
Full text available from Advanced Technologies & Aerospace Database: 01/01/2009 to present
Full text available from Earth, Atmospheric & Aquatic Science Database: 01/01/2009 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
4