| article html file updated | 6 February 2020 07:36 CET | Update | https://www.mdpi.com/1999-4915/6/3/1004 |
| article html file updated | 7 May 2019 17:56 CEST | Update | - |
| article html file updated | 21 March 2019 13:11 CET | Update | - |
| article html file updated | 19 August 2015 22:08 CEST | Update | - |
| article html file updated | 28 April 2014 11:26 CEST | Original file | - |
| article xml file uploaded | 28 April 2014 11:26 CEST | Original file | https://www.mdpi.com/1999-4915/6/3/1004/xml |
| article pdf uploaded. | 28 February 2014 13:22 CET | Version of Record | https://www.mdpi.com/1999-4915/6/3/1004/pdf |
