| article html file updated | 6 February 2020 07:25 CET | Update | https://www.mdpi.com/2072-6643/6/2/815 |
| article html file updated | 20 September 2019 06:04 CEST | Update | - |
| article html file updated | 7 May 2019 18:19 CEST | Update | - |
| article html file updated | 21 March 2019 12:44 CET | Update | - |
| article html file updated | 19 August 2015 21:21 CEST | Update | - |
| article html file updated | 18 March 2014 09:56 CET | Original file | - |
| article xml file uploaded | 18 March 2014 09:56 CET | Original file | https://www.mdpi.com/2072-6643/6/2/815/xml |
| article pdf uploaded. | 21 February 2014 13:47 CET | Version of Record | https://www.mdpi.com/2072-6643/6/2/815/pdf |
