| article html file updated | 5 February 2020 19:15 CET | Update | https://www.mdpi.com/1999-4923/4/1/104 |
| article html file updated | 8 May 2019 20:42 CEST | Update | - |
| article html file updated | 25 March 2019 09:03 CET | Update | - |
| article html file updated | 16 June 2015 21:23 CEST | Update | - |
| article html file updated | 28 April 2014 11:04 CEST | Update | - |
| article xml file uploaded | 28 April 2014 11:04 CEST | Original file | https://www.mdpi.com/1999-4923/4/1/104/xml |
| article html file updated | 7 February 2013 09:59 CET | Update | - |
| article html file updated | 7 February 2013 00:28 CET | Update | - |
| article html file updated | 6 February 2013 05:46 CET | Update | - |
| article html file updated | 29 January 2013 01:30 CET | Update | - |
| article html file updated | 26 January 2013 07:47 CET | Update | - |
| article html file updated | 23 January 2013 08:41 CET | Original file | - |
