| article html file updated | 29 August 2025 22:23 CEST | Update | https://www.mdpi.com/2218-2004/3/4/474 |
| article html file updated | 16 July 2022 01:18 CEST | Update | N/A |
| article html file updated | 7 February 2020 01:15 CET | Original file | N/A |
| article pdf uploaded. | 20 November 2015 17:43 CET | Version of Record | https://www.mdpi.com/2218-2004/3/4/474/pdf |
| article xml uploaded. | 20 November 2015 17:43 CET | Original file | https://www.mdpi.com/2218-2004/3/4/474/xml |
