| article html file updated | 5 February 2020 21:53 CET | Update | https://www.mdpi.com/1422-0067/13/9/11333 |
| article html file updated | 8 May 2019 15:00 CEST | Update | N/A |
| article html file updated | 20 March 2019 12:13 CET | Update | N/A |
| article html file updated | 17 June 2015 02:08 CEST | Update | N/A |
| article html file updated | 7 February 2013 14:51 CET | Update | N/A |
| article html file updated | 7 February 2013 05:53 CET | Update | N/A |
| article html file updated | 6 February 2013 10:11 CET | Update | N/A |
| article html file updated | 29 January 2013 06:27 CET | Update | N/A |
| article html file updated | 24 January 2013 01:32 CET | Original file | N/A |
