| article html file updated | 8 February 2020 05:13 CET | Update | https://www.mdpi.com/1999-5903/9/2/17 |
| article html file updated | 24 September 2019 16:33 CEST | Update | - |
| article html file updated | 3 May 2019 23:13 CEST | Update | - |
| article html file updated | 30 June 2017 11:28 CEST | Update | - |
| article html file updated | 23 May 2017 03:48 CEST | Update | - |
| article html file updated | 9 May 2017 10:52 CEST | Original file | - |
| article xml uploaded. | 9 May 2017 10:50 CEST | Original file | https://www.mdpi.com/1999-5903/9/2/17/xml |
| article pdf uploaded. | 9 May 2017 10:50 CEST | Updated version of record | https://www.mdpi.com/1999-5903/9/2/17/pdf |
| article pdf uploaded. | 6 May 2017 11:53 CEST | Version of Record | https://www.mdpi.com/1999-5903/9/2/17/pdf-vor |
