| article html file updated | 6 February 2020 22:31 CET | Update | https://www.mdpi.com/2071-1050/7/9/12258 |
| article html file updated | 6 May 2019 11:55 CEST | Update | N/A |
| article html file updated | 26 March 2019 10:11 CET | Update | N/A |
| article html file updated | 12 October 2015 12:32 CEST | Original file | N/A |
| article xml file uploaded | 12 October 2015 12:32 CEST | Original file | https://www.mdpi.com/2071-1050/7/9/12258/xml |
| article pdf uploaded. | 8 September 2015 11:17 CEST | Version of Record | https://www.mdpi.com/2071-1050/7/9/12258/pdf |
