| article html file updated | 5 February 2020 19:03 CET | Update | https://www.mdpi.com/2073-4352/2/1/56 |
| 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 | 12 August 2014 11:19 CEST | Update | N/A |
| article xml file uploaded | 12 August 2014 11:18 CEST | Original file | https://www.mdpi.com/2073-4352/2/1/56/xml |
| 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 07:12 CET | Original file | N/A |
