| article html file updated | 6 February 2020 05:31 CET | Update | https://www.mdpi.com/2079-6374/3/4/374 |
| article html file updated | 7 May 2019 22:10 CEST | Update | - |
| article html file updated | 21 March 2019 07:35 CET | Update | - |
| article html file updated | 19 August 2015 09:37 CEST | Update | - |
| article html file updated | 26 August 2014 04:00 CEST | Original file | - |
| article xml file uploaded | 26 August 2014 04:00 CEST | Original file | https://www.mdpi.com/2079-6374/3/4/374/xml |
| article pdf uploaded. | 13 November 2013 15:54 CET | Version of Record | https://www.mdpi.com/2079-6374/3/4/374/pdf |
