| article html file updated | 12 August 2026 17:43 CEST | Update | https://www.mdpi.com/1996-1073/6/2/598 |
| article html file updated | 29 August 2025 20:33 CEST | Update | N/A |
| article html file updated | 15 July 2022 22:08 CEST | Update | N/A |
| article html file updated | 6 February 2020 00:14 CET | Update | N/A |
| article html file updated | 8 May 2019 09:15 CEST | Update | N/A |
| article html file updated | 20 March 2019 17:49 CET | Original file | N/A |
| article pdf uploaded. | 25 January 2013 15:05 CET | Version of Record | https://www.mdpi.com/1996-1073/6/2/598/pdf |
