| article html file updated | 30 August 2025 04:39 CEST | Update | https://www.mdpi.com/1999-4907/9/6/369 |
| article html file updated | 16 July 2022 21:51 CEST | Update | N/A |
| article html file updated | 9 February 2020 22:04 CET | Update | N/A |
| article html file updated | 4 October 2019 18:09 CEST | Update | N/A |
| article html file updated | 30 April 2019 09:25 CEST | Update | N/A |
| article html file updated | 16 April 2019 04:24 CEST | Update | N/A |
| article html file updated | 30 March 2019 12:19 CET | Update | N/A |
| article html file updated | 26 June 2018 05:52 CEST | Update | N/A |
| article html file updated | 20 June 2018 03:12 CEST | Original file | N/A |
| article pdf uploaded. | 20 June 2018 03:10 CEST | Version of Record | https://www.mdpi.com/1999-4907/9/6/369/pdf |
| article xml uploaded. | 20 June 2018 03:10 CEST | Update | https://www.mdpi.com/1999-4907/9/6/369/xml |
| article xml file uploaded | 20 June 2018 03:10 CEST | Original file | N/A |