| article html file updated | 6 February 2020 15:20 CET | Update | https://www.mdpi.com/2071-1050/7/1/1081 |
| article html file updated | 7 May 2019 02:10 CEST | Update | - |
| article html file updated | 25 March 2019 20:46 CET | Update | - |
| article html file updated | 21 August 2015 06:11 CEST | Update | - |
| article html file updated | 27 January 2015 07:38 CET | Update | - |
| article xml file uploaded | 27 January 2015 07:38 CET | Update | https://www.mdpi.com/2071-1050/7/1/1081/xml |
| article html file updated | 23 January 2015 08:24 CET | Original file | - |
| article xml file uploaded | 23 January 2015 08:24 CET | Original file | - |
| article pdf uploaded. | 21 January 2015 11:01 CET | Updated version of record | https://www.mdpi.com/2071-1050/7/1/1081/pdf |
| article pdf uploaded. | 20 January 2015 14:14 CET | Version of Record | https://www.mdpi.com/2071-1050/7/1/1081/pdf-vor |
