| article html file updated | 6 February 2020 21:54 CET | Update | https://www.mdpi.com/2077-1444/6/3/969 |
| article html file updated | 21 September 2019 02:07 CEST | Update | - |
| article html file updated | 6 May 2019 13:12 CEST | Update | - |
| article html file updated | 26 March 2019 09:02 CET | Update | - |
| article html file updated | 13 October 2015 11:54 CEST | Original file | - |
| article xml file uploaded | 13 October 2015 11:54 CEST | Original file | https://www.mdpi.com/2077-1444/6/3/969/xml |
| article pdf uploaded. | 19 August 2015 15:21 CEST | Version of Record | https://www.mdpi.com/2077-1444/6/3/969/pdf |
