| article html file updated | 30 August 2025 00:14 CEST | Update | https://www.mdpi.com/1660-3397/15/1/20 |
| article html file updated | 16 July 2022 04:32 CEST | Update | N/A |
| article html file updated | 7 February 2020 21:40 CET | Update | N/A |
| article html file updated | 22 September 2019 22:30 CEST | Update | N/A |
| article html file updated | 4 May 2019 14:45 CEST | Update | N/A |
| article html file updated | 7 February 2017 13:39 CET | Update | N/A |
| article html file updated | 18 January 2017 09:09 CET | Original file | N/A |
| article xml uploaded. | 18 January 2017 09:08 CET | Original file | https://www.mdpi.com/1660-3397/15/1/20/xml |
| article pdf uploaded. | 18 January 2017 09:08 CET | Version of Record | https://www.mdpi.com/1660-3397/15/1/20/pdf |
