| article html file updated | 5 February 2020 19:49 CET | Update | https://www.mdpi.com/2076-3387/2/1/99 |
| article html file updated | 19 September 2019 09:18 CEST | Update | N/A |
| article html file updated | 8 May 2019 19:31 CEST | Update | N/A |
| article html file updated | 25 March 2019 10:04 CET | Update | N/A |
| article html file updated | 16 June 2015 22:32 CEST | Update | N/A |
| article html file updated | 7 February 2013 11:11 CET | Update | N/A |
| article html file updated | 7 February 2013 01:15 CET | Update | N/A |
| article html file updated | 6 February 2013 06:40 CET | Update | N/A |
| article html file updated | 29 January 2013 02:19 CET | Update | N/A |
| article html file updated | 26 January 2013 08:57 CET | Update | N/A |
| article html file updated | 23 January 2013 12:59 CET | Original file | N/A |
