| article html file updated | 7 February 2020 20:18 CET | Update | https://www.mdpi.com/2227-7080/5/1/2 |
| article html file updated | 22 September 2019 15:13 CEST | Update | N/A |
| article html file updated | 4 May 2019 17:49 CEST | Update | N/A |
| article html file updated | 30 March 2017 08:58 CEST | Update | N/A |
| article html file updated | 26 December 2016 09:56 CET | Original file | N/A |
| article xml uploaded. | 26 December 2016 09:55 CET | Update | https://www.mdpi.com/2227-7080/5/1/2/xml |
| article xml uploaded. | 26 December 2016 09:55 CET | Original file | N/A |
| article pdf uploaded. | 26 December 2016 09:55 CET | Version of Record | https://www.mdpi.com/2227-7080/5/1/2/pdf |
