| article html file updated | 8 February 2020 18:50 CET | Update | https://www.mdpi.com/1999-5903/9/4/65 |
| article html file updated | 27 September 2019 20:40 CEST | Update | N/A |
| article html file updated | 2 May 2019 20:25 CEST | Update | N/A |
| article html file updated | 2 January 2018 11:17 CET | Update | N/A |
| article html file updated | 19 October 2017 12:53 CEST | Original file | N/A |
| article xml uploaded. | 19 October 2017 12:52 CEST | Original file | https://www.mdpi.com/1999-5903/9/4/65/xml |
| article pdf uploaded. | 19 October 2017 12:52 CEST | Updated version of record | https://www.mdpi.com/1999-5903/9/4/65/pdf |
| article pdf uploaded. | 18 October 2017 15:20 CEST | Version of Record | https://www.mdpi.com/1999-5903/9/4/65/pdf-vor |
