| article html file updated | 6 February 2020 08:04 CET | Update | https://www.mdpi.com/2073-4441/6/3/564 |
| article html file updated | 7 May 2019 17:00 CEST | Update | - |
| article html file updated | 21 March 2019 14:15 CET | Update | - |
| article html file updated | 20 August 2015 00:35 CEST | Update | - |
| article html file updated | 24 June 2014 12:29 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:28 CEST | Original file | https://www.mdpi.com/2073-4441/6/3/564/xml |
| article pdf uploaded. | 24 March 2014 18:45 CET | Updated version of record | https://www.mdpi.com/2073-4441/6/3/564/pdf |
| article pdf uploaded. | 21 March 2014 09:34 CET | Version of Record | https://www.mdpi.com/2073-4441/6/3/564/pdf-vor |
