| article html file updated | 30 August 2025 04:18 CEST | Update | https://www.mdpi.com/2227-9059/6/2/66 |
| article html file updated | 16 July 2022 21:05 CEST | Update | - |
| article html file updated | 9 February 2020 20:16 CET | Update | - |
| article html file updated | 4 October 2019 06:43 CEST | Update | - |
| article html file updated | 30 April 2019 13:49 CEST | Update | - |
| article html file updated | 16 April 2019 14:27 CEST | Update | - |
| article html file updated | 30 March 2019 07:37 CET | Update | - |
| article html file updated | 27 June 2018 19:18 CEST | Update | - |
| article html file updated | 5 June 2018 08:22 CEST | Original file | - |
| article pdf uploaded. | 5 June 2018 08:21 CEST | Version of Record | https://www.mdpi.com/2227-9059/6/2/66/pdf |
| article xml uploaded. | 5 June 2018 08:21 CEST | Update | https://www.mdpi.com/2227-9059/6/2/66/xml |
| article xml file uploaded | 5 June 2018 08:21 CEST | Original file | - |
