| article html file updated | 7 February 2020 09:00 CET | Update | https://www.mdpi.com/2076-0760/5/2/22 |
| article html file updated | 21 September 2019 17:34 CEST | Update | N/A |
| article html file updated | 5 May 2019 15:13 CEST | Update | N/A |
| article html file updated | 27 March 2019 05:15 CET | Update | N/A |
| article html file updated | 20 May 2016 08:48 CEST | Original file | N/A |
| article xml uploaded. | 20 May 2016 08:47 CEST | Original file | https://www.mdpi.com/2076-0760/5/2/22/xml |
| article pdf uploaded. | 20 May 2016 08:47 CEST | Version of Record | https://www.mdpi.com/2076-0760/5/2/22/pdf |
