| article html file updated | 6 February 2020 03:03 CET | Update | https://www.mdpi.com/1999-4915/5/7/1664 |
| article html file updated | 8 May 2019 03:09 CEST | Update | - |
| article html file updated | 21 March 2019 00:53 CET | Update | - |
| article html file updated | 17 June 2015 11:01 CEST | Update | - |
| article html file updated | 9 August 2013 12:00 CEST | Original file | - |
| article xml file uploaded | 9 August 2013 12:00 CEST | Original file | https://www.mdpi.com/1999-4915/5/7/1664/xml |
| article supplementary file uploaded. | 9 July 2013 11:18 CEST | - | https://www.mdpi.com/1999-4915/5/7/1664#supplementary |
| article pdf uploaded. | 8 July 2013 11:42 CEST | Version of Record | https://www.mdpi.com/1999-4915/5/7/1664/pdf |
