| article html file updated | 6 February 2020 05:43 CET | Update | https://www.mdpi.com/1996-1073/6/11/6120 |
| article html file updated | 7 May 2019 21:46 CEST | Update | - |
| article html file updated | 21 March 2019 08:07 CET | Update | - |
| article html file updated | 21 July 2017 05:09 CEST | Update | - |
| article html file updated | 21 July 2017 05:08 CEST | Update | - |
| article html file updated | 21 July 2017 05:07 CEST | Original file | - |
| article xml uploaded. | 21 July 2017 05:06 CEST | Original file | https://www.mdpi.com/1996-1073/6/11/6120/xml |
| article pdf uploaded. | 22 November 2013 12:16 CET | Version of Record | https://www.mdpi.com/1996-1073/6/11/6120/pdf |
