| article html file updated | 30 August 2025 02:33 CEST | Update | https://www.mdpi.com/2073-4433/9/2/56 |
| article html file updated | 16 July 2022 09:09 CEST | Update | - |
| article html file updated | 9 February 2020 06:03 CET | Update | - |
| article html file updated | 30 September 2019 15:53 CEST | Update | - |
| article html file updated | 1 May 2019 19:46 CEST | Update | - |
| article html file updated | 17 April 2019 18:53 CEST | Update | - |
| article html file updated | 28 March 2019 22:05 CET | Update | - |
| article html file updated | 14 March 2018 10:40 CET | Update | - |
| article html file updated | 9 February 2018 10:15 CET | Original file | - |
| article xml uploaded. | 9 February 2018 10:14 CET | Update | https://www.mdpi.com/2073-4433/9/2/56/xml |
| article xml uploaded. | 9 February 2018 10:14 CET | Original file | - |
| article pdf uploaded. | 9 February 2018 10:14 CET | Version of Record | https://www.mdpi.com/2073-4433/9/2/56/pdf |