| article html file updated | 30 August 2025 08:42 CEST | Update | https://www.mdpi.com/2079-9721/6/4/102 |
| article html file updated | 17 July 2022 08:36 CEST | Update | N/A |
| article html file updated | 10 February 2020 20:44 CET | Update | N/A |
| article html file updated | 10 October 2019 07:12 CEST | Update | N/A |
| article html file updated | 28 April 2019 09:43 CEST | Update | N/A |
| article html file updated | 14 April 2019 05:13 CEST | Update | N/A |
| article html file updated | 1 April 2019 19:27 CEST | Update | N/A |
| article html file updated | 26 December 2018 21:56 CET | Update | N/A |
| article html file updated | 11 November 2018 05:35 CET | Original file | N/A |
| article pdf uploaded. | 11 November 2018 05:34 CET | Version of Record | https://www.mdpi.com/2079-9721/6/4/102/pdf |
| article xml uploaded. | 11 November 2018 05:34 CET | Update | https://www.mdpi.com/2079-9721/6/4/102/xml |
| article xml file uploaded | 11 November 2018 05:34 CET | Original file | N/A |