| article html file updated | 5 February 2020 12:38 CET | Update | https://www.mdpi.com/1660-3397/7/3/451 |
| article html file updated | 8 January 2020 08:11 CET | Update | N/A |
| article html file updated | 18 September 2019 18:52 CEST | Update | N/A |
| article html file updated | 9 May 2019 10:24 CEST | Update | N/A |
| article html file updated | 19 March 2019 19:41 CET | Update | N/A |
| article html file updated | 16 June 2015 07:02 CEST | Update | N/A |
| article html file updated | 6 February 2013 15:41 CET | Update | N/A |
| article html file updated | 5 February 2013 19:50 CET | Update | N/A |
| article html file updated | 28 January 2013 17:29 CET | Update | N/A |
| article html file updated | 25 January 2013 19:48 CET | Update | N/A |
| article html file updated | 21 January 2013 16:41 CET | Update | N/A |
| article html file updated | 17 January 2013 23:13 CET | Original file | N/A |
