| article html file updated | 8 February 2020 21:09 CET | Update | https://www.mdpi.com/1999-5903/9/4/83 |
| article html file updated | 28 September 2019 11:19 CEST | Update | N/A |
| article html file updated | 2 May 2019 15:04 CEST | Update | N/A |
| article html file updated | 2 January 2018 11:19 CET | Update | N/A |
| article html file updated | 14 November 2017 12:58 CET | Original file | N/A |
| article xml uploaded. | 14 November 2017 12:57 CET | Original file | https://www.mdpi.com/1999-5903/9/4/83/xml |
| article pdf uploaded. | 14 November 2017 12:57 CET | Version of Record | https://www.mdpi.com/1999-5903/9/4/83/pdf |
