| article html file updated | 5 February 2020 19:19 CET | Update | https://www.mdpi.com/1999-4923/4/1/149 |
| article html file updated | 8 May 2019 20:34 CEST | Update | - |
| article html file updated | 25 March 2019 09:10 CET | Update | - |
| article html file updated | 16 June 2015 21:31 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/1999-4923/4/1/149/xml |
| article html file updated | 7 February 2013 10:12 CET | Update | - |
| article html file updated | 7 February 2013 00:34 CET | Update | - |
| article html file updated | 6 February 2013 05:52 CET | Update | - |
| article html file updated | 29 January 2013 01:36 CET | Update | - |
| article html file updated | 26 January 2013 07:56 CET | Update | - |
| article html file updated | 23 January 2013 09:10 CET | Original file | - |
