| article html file updated | 7 February 2020 12:28 CET | Update | https://www.mdpi.com/1999-4907/7/8/159 |
| article html file updated | 5 May 2019 08:45 CEST | Update | - |
| article html file updated | 27 March 2019 11:42 CET | Update | - |
| article html file updated | 25 August 2016 11:51 CEST | Update | - |
| article html file updated | 28 July 2016 11:34 CEST | Original file | - |
| article xml uploaded. | 28 July 2016 11:33 CEST | Original file | https://www.mdpi.com/1999-4907/7/8/159/xml |
| article pdf uploaded. | 28 July 2016 11:33 CEST | Version of Record | https://www.mdpi.com/1999-4907/7/8/159/pdf |
