| article html file updated | 29 August 2025 20:55 CEST | Update | https://www.mdpi.com/1424-8247/7/1/58 |
| article html file updated | 15 July 2022 22:49 CEST | Update | - |
| article html file updated | 6 February 2020 06:45 CET | Update | - |
| article html file updated | 7 May 2019 19:46 CEST | Update | - |
| article html file updated | 21 March 2019 11:04 CET | Update | - |
| article html file updated | 19 August 2015 17:27 CEST | Update | - |
| article html file updated | 17 February 2014 12:36 CET | Original file | - |
| article xml file uploaded | 17 February 2014 12:35 CET | Original file | https://www.mdpi.com/1424-8247/7/1/58/xml |
| article pdf uploaded. | 15 January 2014 11:52 CET | Version of Record | https://www.mdpi.com/1424-8247/7/1/58/pdf |
