| article html file updated | 8 February 2020 03:07 CET | Update | https://www.mdpi.com/1999-5903/9/2/11 |
| article html file updated | 24 September 2019 05:10 CEST | Update | - |
| article html file updated | 4 May 2019 03:08 CEST | Update | - |
| article html file updated | 30 June 2017 22:24 CEST | Update | - |
| article html file updated | 7 April 2017 13:14 CEST | Original file | - |
| article xml uploaded. | 7 April 2017 13:13 CEST | Original file | https://www.mdpi.com/1999-5903/9/2/11/xml |
| article pdf uploaded. | 7 April 2017 13:13 CEST | Version of Record | https://www.mdpi.com/1999-5903/9/2/11/pdf |
