| article html file updated | 8 February 2020 21:42 CET | Update | https://www.mdpi.com/1999-5903/9/4/88 |
| article html file updated | 28 September 2019 14:49 CEST | Update | - |
| article html file updated | 2 May 2019 13:51 CEST | Update | - |
| article html file updated | 18 April 2019 11:30 CEST | Update | - |
| article html file updated | 2 January 2018 11:20 CET | Update | - |
| article html file updated | 20 November 2017 16:29 CET | Original file | - |
| article xml uploaded. | 20 November 2017 16:28 CET | Original file | https://www.mdpi.com/1999-5903/9/4/88/xml |
| article pdf uploaded. | 20 November 2017 16:28 CET | Updated version of record | https://www.mdpi.com/1999-5903/9/4/88/pdf |
| article pdf uploaded. | 20 November 2017 12:22 CET | Version of Record | - |
