| article html file updated | 6 February 2020 06:52 CET | Update | https://www.mdpi.com/1660-3397/12/1/508 |
| article html file updated | 7 May 2019 19:31 CEST | Update | - |
| article html file updated | 21 March 2019 11:22 CET | Update | - |
| article html file updated | 19 August 2015 18:22 CEST | Update | - |
| article html file updated | 17 February 2014 12:24 CET | Original file | - |
| article xml file uploaded | 17 February 2014 12:23 CET | Original file | https://www.mdpi.com/1660-3397/12/1/508/xml |
| article pdf uploaded. | 23 January 2014 09:09 CET | Updated version of record | https://www.mdpi.com/1660-3397/12/1/508/pdf |
| article pdf uploaded. | 22 January 2014 11:26 CET | Version of Record | - |
