| article html file updated | 8 February 2020 04:50 CET | Update | https://www.mdpi.com/1999-5903/9/2/16 |
| article html file updated | 24 September 2019 14:39 CEST | Update | - |
| article html file updated | 3 May 2019 23:54 CEST | Update | - |
| article html file updated | 30 June 2017 22:24 CEST | Update | - |
| article html file updated | 23 May 2017 03:29 CEST | Update | - |
| article html file updated | 4 May 2017 11:33 CEST | Original file | - |
| article xml uploaded. | 4 May 2017 11:32 CEST | Original file | https://www.mdpi.com/1999-5903/9/2/16/xml |
| article pdf uploaded. | 4 May 2017 11:32 CEST | Updated version of record | https://www.mdpi.com/1999-5903/9/2/16/pdf |
| article pdf uploaded. | 1 May 2017 10:17 CEST | Version of Record | https://www.mdpi.com/1999-5903/9/2/16/pdf-vor |
