| article html file updated | 12 August 2026 17:39 CEST | Update | https://www.mdpi.com/1424-8247/6/1/70 |
| article html file updated | 5 February 2020 23:59 CET | Update | N/A |
| article html file updated | 19 September 2019 17:02 CEST | Update | N/A |
| article html file updated | 8 May 2019 09:49 CEST | Update | N/A |
| article html file updated | 20 March 2019 17:12 CET | Update | N/A |
| article html file updated | 17 June 2015 05:32 CEST | Update | N/A |
| article html file updated | 13 September 2013 17:16 CEST | Update | N/A |
| article xml file uploaded | 13 September 2013 17:16 CEST | Original file | https://www.mdpi.com/1424-8247/6/1/70/xml |
| article html file updated | 8 February 2013 09:30 CET | Update | N/A |
| article html file updated | 7 February 2013 17:50 CET | Update | N/A |
| article html file updated | 24 January 2013 12:19 CET | Original file | N/A |
