| article html file updated | 5 February 2020 22:18 CET | Update | https://www.mdpi.com/2218-273X/2/4/435 |
| article html file updated | 19 September 2019 13:51 CEST | Update | N/A |
| article html file updated | 8 May 2019 14:03 CEST | Update | N/A |
| article html file updated | 20 March 2019 13:19 CET | Update | N/A |
| article html file updated | 15 June 2018 10:21 CEST | Update | N/A |
| article html file updated | 17 June 2015 02:49 CEST | Update | N/A |
| article html file updated | 12 May 2014 15:30 CEST | Update | N/A |
| article xml file uploaded | 12 May 2014 15:30 CEST | Original file | https://www.mdpi.com/2218-273X/2/4/435/xml |
| article html file updated | 7 February 2013 15:35 CET | Update | N/A |
| article html file updated | 24 January 2013 04:21 CET | Original file | N/A |
