| article html file updated | 5 February 2020 22:19 CET | Update | https://www.mdpi.com/2073-4409/1/4/738 |
| article html file updated | 8 May 2019 13:59 CEST | Update | - |
| article html file updated | 20 March 2019 13:22 CET | Update | - |
| article html file updated | 17 June 2015 02:52 CEST | Update | - |
| article html file updated | 30 August 2013 09:06 CEST | Update | - |
| article xml file uploaded | 30 August 2013 09:06 CEST | Original file | https://www.mdpi.com/2073-4409/1/4/738/xml |
| article html file updated | 7 February 2013 15:39 CET | Update | - |
| article html file updated | 24 January 2013 04:41 CET | Original file | - |
