| article html file updated | 30 August 2025 05:22 CEST | Update | https://www.mdpi.com/2221-3759/6/3/18 |
| article html file updated | 16 July 2022 23:26 CEST | Update | - |
| article html file updated | 10 February 2020 01:59 CET | Update | - |
| article html file updated | 5 October 2019 18:08 CEST | Update | - |
| article html file updated | 30 April 2019 01:09 CEST | Update | - |
| article html file updated | 15 April 2019 20:25 CEST | Update | - |
| article html file updated | 30 March 2019 21:53 CET | Update | - |
| article html file updated | 26 September 2018 08:15 CEST | Update | - |
| article html file updated | 2 August 2018 12:26 CEST | Update | - |
| article html file updated | 19 July 2018 10:22 CEST | Original file | - |
| article pdf uploaded. | 19 July 2018 10:21 CEST | Version of Record | https://www.mdpi.com/2221-3759/6/3/18/pdf |
| article xml uploaded. | 19 July 2018 10:21 CEST | Update | https://www.mdpi.com/2221-3759/6/3/18/xml |
| article xml file uploaded | 19 July 2018 10:21 CEST | Original file | - |
