| article html file updated | 30 August 2025 02:07 CEST | Update | https://www.mdpi.com/1999-4907/9/1/3 |
| article html file updated | 16 July 2022 08:16 CEST | Update | N/A |
| article html file updated | 9 February 2020 01:38 CET | Update | N/A |
| article html file updated | 29 September 2019 14:14 CEST | Update | N/A |
| article html file updated | 2 May 2019 05:11 CEST | Update | N/A |
| article html file updated | 18 April 2019 03:14 CEST | Update | N/A |
| article html file updated | 28 March 2019 12:14 CET | Update | N/A |
| article html file updated | 1 February 2018 13:05 CET | Update | N/A |
| article html file updated | 4 January 2018 06:50 CET | Update | N/A |
| article xml uploaded. | 4 January 2018 06:49 CET | Update | https://www.mdpi.com/1999-4907/9/1/3/xml |
| article pdf uploaded. | 4 January 2018 06:49 CET | Updated version of record | https://www.mdpi.com/1999-4907/9/1/3/pdf |
| article html file updated | 1 January 2018 03:37 CET | Original file | N/A |
| article pdf uploaded. | 1 January 2018 03:36 CET | Version of Record | https://www.mdpi.com/1999-4907/9/1/3/pdf-vor |