| article html file updated | 9 February 2020 06:23 CET | Update | https://www.mdpi.com/2073-4344/8/2/77 |
| article html file updated | 30 September 2019 17:51 CEST | Update | - |
| article html file updated | 1 May 2019 18:59 CEST | Update | - |
| article html file updated | 17 April 2019 18:14 CEST | Update | - |
| article html file updated | 28 March 2019 22:47 CET | Update | - |
| article html file updated | 14 March 2018 08:46 CET | Update | - |
| article html file updated | 12 February 2018 07:02 CET | Original file | - |
| article xml uploaded. | 12 February 2018 07:00 CET | Original file | https://www.mdpi.com/2073-4344/8/2/77/xml |
| article pdf uploaded. | 12 February 2018 07:00 CET | Version of Record | https://www.mdpi.com/2073-4344/8/2/77/pdf |
