| article html file updated | 6 February 2020 22:19 CET | Update | https://www.mdpi.com/1999-5903/7/3/307 |
| article html file updated | 6 May 2019 12:20 CEST | Update | - |
| article html file updated | 26 March 2019 09:50 CET | Update | - |
| article html file updated | 27 October 2015 12:01 CET | Original file | - |
| article xml file uploaded | 27 October 2015 12:01 CET | Original file | https://www.mdpi.com/1999-5903/7/3/307/xml |
| article pdf uploaded. | 31 August 2015 16:16 CEST | Version of Record | https://www.mdpi.com/1999-5903/7/3/307/pdf |
