| article html file updated | 7 February 2020 14:43 CET | Update | https://www.mdpi.com/1999-5903/8/3/45 |
| article html file updated | 5 May 2019 04:34 CEST | Update | - |
| article html file updated | 9 September 2016 10:46 CEST | Original file | - |
| article xml uploaded. | 9 September 2016 10:45 CEST | Original file | https://www.mdpi.com/1999-5903/8/3/45/xml |
| article pdf uploaded. | 9 September 2016 10:45 CEST | Version of Record | https://www.mdpi.com/1999-5903/8/3/45/pdf |
