| article html file updated | 9 February 2020 04:42 CET | Update | https://www.mdpi.com/2073-4344/8/2/51 |
| article html file updated | 30 September 2019 07:38 CEST | Update | - |
| article html file updated | 1 May 2019 22:48 CEST | Update | - |
| article html file updated | 17 April 2019 21:27 CEST | Update | - |
| article html file updated | 28 March 2019 19:08 CET | Update | - |
| article html file updated | 14 March 2018 08:41 CET | Update | - |
| article html file updated | 29 January 2018 09:10 CET | Original file | - |
| article xml uploaded. | 29 January 2018 09:09 CET | Update | https://www.mdpi.com/2073-4344/8/2/51/xml |
| article xml uploaded. | 29 January 2018 09:09 CET | Original file | - |
| article pdf uploaded. | 29 January 2018 09:09 CET | Version of Record | https://www.mdpi.com/2073-4344/8/2/51/pdf |
