| article html file updated | 30 August 2025 03:15 CEST | Update | https://www.mdpi.com/1999-4907/9/4/176 |
| article html file updated | 21 August 2025 19:50 CEST | Update | N/A |
| article html file updated | 9 February 2020 11:52 CET | Update | N/A |
| article html file updated | 2 October 2019 03:04 CEST | Update | N/A |
| article html file updated | 1 May 2019 07:25 CEST | Update | N/A |
| article html file updated | 17 April 2019 07:24 CEST | Update | N/A |
| article html file updated | 29 March 2019 11:13 CET | Update | N/A |
| article html file updated | 1 May 2018 11:25 CEST | Update | N/A |
| article html file updated | 10 April 2018 11:39 CEST | Update | N/A |
| article xml uploaded. | 10 April 2018 11:38 CEST | Update | https://www.mdpi.com/1999-4907/9/4/176/xml |
| article pdf uploaded. | 10 April 2018 11:38 CEST | Updated version of record | https://www.mdpi.com/1999-4907/9/4/176/pdf |
| article html file updated | 30 March 2018 06:20 CEST | Original file | N/A |
| article pdf uploaded. | 30 March 2018 06:18 CEST | Version of Record | https://www.mdpi.com/1999-4907/9/4/176/pdf-vor |
| article xml file uploaded | 30 March 2018 06:18 CEST | Original file | N/A |