| article html file updated | 29 August 2025 22:45 CEST | Update | https://www.mdpi.com/2079-9721/4/1/12 |
| article html file updated | 16 July 2022 01:51 CEST | Update | N/A |
| article html file updated | 7 February 2020 05:07 CET | Update | N/A |
| article html file updated | 5 May 2019 23:06 CEST | Update | N/A |
| article html file updated | 26 March 2019 21:53 CET | Original file | N/A |
| article pdf uploaded. | 26 February 2016 11:12 CET | Version of Record | https://www.mdpi.com/2079-9721/4/1/12/pdf |
