| article html file updated | 30 August 2025 00:12 CEST | Update | https://www.mdpi.com/2075-4450/8/1/9 |
| article html file updated | 16 July 2022 04:28 CEST | Update | - |
| article html file updated | 7 February 2020 21:12 CET | Update | - |
| article html file updated | 22 September 2019 20:00 CEST | Update | - |
| article html file updated | 4 May 2019 15:53 CEST | Update | - |
| article html file updated | 30 March 2017 11:01 CEST | Update | - |
| article html file updated | 11 January 2017 15:01 CET | Original file | - |
| article xml uploaded. | 11 January 2017 15:00 CET | Original file | https://www.mdpi.com/2075-4450/8/1/9/xml |
| article pdf uploaded. | 11 January 2017 15:00 CET | Version of Record | https://www.mdpi.com/2075-4450/8/1/9/pdf |
