| article html file updated | 29 August 2025 22:55 CEST | Update | https://www.mdpi.com/1999-4907/7/4/80 |
| article html file updated | 20 August 2025 22:17 CEST | Update | N/A |
| article html file updated | 7 February 2020 06:51 CET | Update | N/A |
| article html file updated | 5 May 2019 19:32 CEST | Update | N/A |
| article html file updated | 27 March 2019 01:04 CET | Update | N/A |
| article html file updated | 28 April 2016 12:19 CEST | Update | N/A |
| article html file updated | 6 April 2016 09:07 CEST | Original file | N/A |
| article xml uploaded. | 6 April 2016 09:05 CEST | Original file | https://www.mdpi.com/1999-4907/7/4/80/xml |
| article pdf uploaded. | 6 April 2016 09:05 CEST | Version of Record | https://www.mdpi.com/1999-4907/7/4/80/pdf |
