| article html file updated | 7 February 2020 06:04 CET | Update | https://www.mdpi.com/2227-7382/4/1/13 |
| article html file updated | 5 May 2019 21:07 CEST | Update | N/A |
| article html file updated | 26 March 2019 23:45 CET | Update | N/A |
| article html file updated | 18 May 2016 12:45 CEST | Original file | N/A |
| article xml uploaded. | 17 March 2016 13:15 CET | Original file | https://www.mdpi.com/2227-7382/4/1/13/xml |
| article pdf uploaded. | 17 March 2016 13:15 CET | Version of Record | https://www.mdpi.com/2227-7382/4/1/13/pdf |
