| article html file updated | 9 February 2020 05:50 CET | Update | https://www.mdpi.com/2227-9067/5/2/22 |
| article html file updated | 30 September 2019 14:38 CEST | Update | N/A |
| article html file updated | 1 May 2019 20:15 CEST | Update | N/A |
| article html file updated | 17 April 2019 19:19 CEST | Update | N/A |
| article html file updated | 28 March 2019 21:37 CET | Update | N/A |
| article html file updated | 14 March 2018 08:33 CET | Update | N/A |
| article html file updated | 7 February 2018 11:58 CET | Original file | N/A |
| article xml uploaded. | 7 February 2018 11:57 CET | Original file | https://www.mdpi.com/2227-9067/5/2/22/xml |
| article pdf uploaded. | 7 February 2018 11:57 CET | Version of Record | https://www.mdpi.com/2227-9067/5/2/22/pdf |
