| article html file updated | 5 February 2020 19:19 CET | Update | https://www.mdpi.com/2075-1729/2/1/213 |
| article html file updated | 19 September 2019 08:09 CEST | Update | - |
| article html file updated | 8 May 2019 20:36 CEST | Update | - |
| article html file updated | 25 March 2019 09:08 CET | Update | - |
| article html file updated | 16 June 2015 21:29 CEST | Update | - |
| article html file updated | 24 July 2014 10:29 CEST | Update | - |
| article xml file uploaded | 24 July 2014 10:29 CEST | Original file | https://www.mdpi.com/2075-1729/2/1/213/xml |
| article html file updated | 7 February 2013 10:08 CET | Update | - |
| article html file updated | 7 February 2013 00:32 CET | Update | - |
| article html file updated | 6 February 2013 05:50 CET | Update | - |
| article html file updated | 29 January 2013 01:34 CET | Update | - |
| article html file updated | 26 January 2013 07:53 CET | Update | - |
| article html file updated | 23 January 2013 09:03 CET | Original file | - |
