| article html file updated | 9 February 2020 05:58 CET | Update | https://www.mdpi.com/2073-4344/8/2/69 |
| article html file updated | 30 September 2019 15:24 CEST | Update | - |
| article html file updated | 1 May 2019 19:57 CEST | Update | - |
| article html file updated | 17 April 2019 19:04 CEST | Update | - |
| article html file updated | 28 March 2019 21:53 CET | Update | - |
| article html file updated | 14 March 2018 08:44 CET | Update | - |
| article html file updated | 8 February 2018 16:27 CET | Original file | - |
| article xml uploaded. | 8 February 2018 16:26 CET | Original file | https://www.mdpi.com/2073-4344/8/2/69/xml |
| article pdf uploaded. | 8 February 2018 16:26 CET | Version of Record | https://www.mdpi.com/2073-4344/8/2/69/pdf |
