| article html file updated | 5 February 2020 22:21 CET | Update | https://www.mdpi.com/2079-7737/1/3/508 |
| article html file updated | 8 May 2019 13:53 CEST | Update | - |
| article html file updated | 20 March 2019 13:29 CET | Update | - |
| article html file updated | 17 June 2015 02:55 CEST | Update | - |
| article html file updated | 28 April 2014 10:23 CEST | Update | - |
| article xml file uploaded | 28 April 2014 10:23 CEST | Original file | https://www.mdpi.com/2079-7737/1/3/508/xml |
| article html file updated | 7 February 2013 15:43 CET | Update | - |
| article html file updated | 24 January 2013 04:54 CET | Original file | - |
