| article html file updated | 5 February 2020 13:24 CET | Update | https://www.mdpi.com/1660-4601/7/1/189 |
| article html file updated | 8 January 2020 09:17 CET | Update | N/A |
| article html file updated | 18 September 2019 20:36 CEST | Update | N/A |
| article html file updated | 9 May 2019 08:44 CEST | Update | N/A |
| article html file updated | 19 March 2019 21:45 CET | Update | N/A |
| article html file updated | 16 June 2015 07:57 CEST | Update | N/A |
| article html file updated | 6 February 2013 16:22 CET | Update | N/A |
| article html file updated | 5 February 2013 20:31 CET | Update | N/A |
| article html file updated | 28 January 2013 18:08 CET | Update | N/A |
| article html file updated | 25 January 2013 20:45 CET | Update | N/A |
| article html file updated | 21 January 2013 19:32 CET | Update | N/A |
| article html file updated | 18 January 2013 01:34 CET | Original file | N/A |
