| article html file updated | 29 August 2025 20:12 CEST | Update | https://www.mdpi.com/2072-6651/2/4/809 |
| article html file updated | 15 July 2022 21:32 CEST | Update | N/A |
| article html file updated | 5 February 2020 14:18 CET | Update | N/A |
| article html file updated | 18 September 2019 22:39 CEST | Update | N/A |
| article html file updated | 9 May 2019 06:50 CEST | Update | N/A |
| article html file updated | 19 March 2019 23:55 CET | Update | N/A |
| article html file updated | 16 June 2015 09:27 CEST | Update | N/A |
| article html file updated | 14 August 2014 12:06 CEST | Update | N/A |
| article xml file uploaded | 14 August 2014 12:06 CEST | Original file | https://www.mdpi.com/2072-6651/2/4/809/xml |
| article html file updated | 6 February 2013 17:20 CET | Update | N/A |
| article html file updated | 5 February 2013 21:29 CET | Update | N/A |
| article html file updated | 28 January 2013 19:01 CET | Update | N/A |
| article html file updated | 25 January 2013 21:59 CET | Update | N/A |
| article html file updated | 21 January 2013 23:20 CET | Update | N/A |
| article html file updated | 18 January 2013 05:36 CET | Original file | N/A |