| article html file updated | 6 February 2020 19:15 CET | Update | https://www.mdpi.com/2071-1050/7/6/7031 |
| article html file updated | 6 May 2019 18:39 CEST | Update | N/A |
| article html file updated | 26 March 2019 03:56 CET | Update | N/A |
| article html file updated | 21 August 2015 12:56 CEST | Update | N/A |
| article html file updated | 30 June 2015 03:11 CEST | Original file | N/A |
| article xml file uploaded | 30 June 2015 03:11 CEST | Original file | https://www.mdpi.com/2071-1050/7/6/7031/xml |
| article pdf uploaded. | 3 June 2015 11:29 CEST | Updated version of record | https://www.mdpi.com/2071-1050/7/6/7031/pdf |
| article pdf uploaded. | 2 June 2015 10:42 CEST | Version of Record | https://www.mdpi.com/2071-1050/7/6/7031/pdf-vor |
