| article html file updated | 5 February 2020 19:03 CET | Update | https://www.mdpi.com/1422-0067/13/1/612 |
| article html file updated | 8 May 2019 21:05 CEST | Update | N/A |
| article html file updated | 25 March 2019 08:40 CET | Update | N/A |
| article html file updated | 16 June 2015 21:01 CEST | Update | N/A |
| article html file updated | 7 February 2013 09:40 CET | Update | N/A |
| article html file updated | 7 February 2013 00:12 CET | Update | N/A |
| article html file updated | 6 February 2013 05:28 CET | Update | N/A |
| article html file updated | 29 January 2013 01:14 CET | Update | N/A |
| article html file updated | 26 January 2013 07:23 CET | Update | N/A |
| article html file updated | 23 January 2013 07:13 CET | Original file | N/A |
