| article html file updated | 6 February 2020 16:04 CET | Update | https://www.mdpi.com/2072-6651/7/2/621 |
| article html file updated | 7 May 2019 00:46 CEST | Update | - |
| article html file updated | 25 March 2019 21:57 CET | Update | - |
| article html file updated | 21 August 2015 07:51 CEST | Update | - |
| article html file updated | 28 February 2015 03:12 CET | Original file | - |
| article xml file uploaded | 28 February 2015 03:12 CET | Original file | https://www.mdpi.com/2072-6651/7/2/621/xml |
| article pdf uploaded. | 17 February 2015 11:25 CET | Version of Record | https://www.mdpi.com/2072-6651/7/2/621/pdf |
