| article html file updated | 7 February 2020 19:51 CET | Update | https://www.mdpi.com/2073-4344/6/12/212 |
| article html file updated | 22 September 2019 12:44 CEST | Update | - |
| article html file updated | 4 May 2019 18:44 CEST | Update | - |
| article html file updated | 11 January 2017 12:53 CET | Update | - |
| article html file updated | 27 December 2016 11:38 CET | Update | - |
| article html file updated | 17 December 2016 09:28 CET | Original file | - |
| article xml uploaded. | 17 December 2016 09:27 CET | Update | https://www.mdpi.com/2073-4344/6/12/212/xml |
| article xml uploaded. | 17 December 2016 09:27 CET | Original file | - |
| article pdf uploaded. | 17 December 2016 09:27 CET | Version of Record | https://www.mdpi.com/2073-4344/6/12/212/pdf |
