| article html file updated | 6 February 2020 21:16 CET | Update | https://www.mdpi.com/1999-4907/6/8/2588 |
| article html file updated | 6 May 2019 14:35 CEST | Update | - |
| article html file updated | 26 March 2019 07:46 CET | Update | - |
| article html file updated | 1 September 2015 08:42 CEST | Update | - |
| article xml file uploaded | 1 September 2015 08:42 CEST | Original file | https://www.mdpi.com/1999-4907/6/8/2588/xml |
| article html file updated | 21 August 2015 15:20 CEST | Original file | - |
| article pdf uploaded. | 31 July 2015 09:57 CEST | Version of Record | https://www.mdpi.com/1999-4907/6/8/2588/pdf |
