| article html file updated | 9 February 2020 05:59 CET | Update | https://www.mdpi.com/2227-9067/5/2/23 |
| article html file updated | 30 September 2019 15:35 CEST | Update | N/A |
| article html file updated | 1 May 2019 19:53 CEST | Update | N/A |
| article html file updated | 17 April 2019 19:00 CEST | Update | N/A |
| article html file updated | 28 March 2019 21:57 CET | Update | N/A |
| article html file updated | 14 March 2018 08:33 CET | Update | N/A |
| article html file updated | 8 February 2018 16:30 CET | Original file | N/A |
| article xml uploaded. | 8 February 2018 16:29 CET | Original file | https://www.mdpi.com/2227-9067/5/2/23/xml |
| article pdf uploaded. | 8 February 2018 16:29 CET | Version of Record | https://www.mdpi.com/2227-9067/5/2/23/pdf |
