| article html file updated | 30 August 2025 02:56 CEST | Update | https://www.mdpi.com/2227-9059/6/1/31 |
| article html file updated | 21 August 2025 19:39 CEST | Update | - |
| article html file updated | 16 July 2022 09:46 CEST | Update | - |
| article html file updated | 9 February 2020 09:08 CET | Update | - |
| article html file updated | 1 October 2019 09:43 CEST | Update | - |
| article html file updated | 1 May 2019 13:15 CEST | Update | - |
| article html file updated | 17 April 2019 12:55 CEST | Update | - |
| article html file updated | 29 March 2019 05:00 CET | Update | - |
| article html file updated | 26 March 2018 16:00 CEST | Update | - |
| article html file updated | 8 March 2018 16:31 CET | Original file | - |
| article xml uploaded. | 8 March 2018 16:30 CET | Original file | https://www.mdpi.com/2227-9059/6/1/31/xml |
| article pdf uploaded. | 8 March 2018 16:30 CET | Version of Record | https://www.mdpi.com/2227-9059/6/1/31/pdf |
