| article html file updated | 7 February 2020 11:13 CET | Update | https://www.mdpi.com/1999-5903/8/3/29 |
| article html file updated | 5 May 2019 11:00 CEST | Update | - |
| article html file updated | 27 March 2019 09:23 CET | Update | - |
| article html file updated | 5 July 2016 08:14 CEST | Original file | - |
| article xml uploaded. | 5 July 2016 08:12 CEST | Original file | https://www.mdpi.com/1999-5903/8/3/29/xml |
| article pdf uploaded. | 5 July 2016 08:12 CEST | Version of Record | https://www.mdpi.com/1999-5903/8/3/29/pdf |
