| article html file updated | 24 December 2025 14:26 CET | Update | https://www.mdpi.com/2227-9059/6/2/50 |
| article html file updated | 30 August 2025 03:48 CEST | Update | - |
| article html file updated | 21 August 2025 20:06 CEST | Update | - |
| article html file updated | 16 July 2022 20:10 CEST | Update | - |
| article html file updated | 9 February 2020 16:24 CET | Update | - |
| article html file updated | 30 April 2019 22:24 CEST | Update | - |
| article html file updated | 16 April 2019 22:53 CEST | Update | - |
| article html file updated | 29 March 2019 21:53 CET | Update | - |
| article html file updated | 27 June 2018 19:15 CEST | Update | - |
| article html file updated | 4 May 2018 13:27 CEST | Original file | - |
| article pdf uploaded. | 4 May 2018 13:26 CEST | Version of Record | https://www.mdpi.com/2227-9059/6/2/50/pdf |
| article xml uploaded. | 4 May 2018 13:26 CEST | Update | https://www.mdpi.com/2227-9059/6/2/50/xml |
| article xml file uploaded | 4 May 2018 13:26 CEST | Original file | - |