| article html file updated | 6 February 2020 18:24 CET | Update | https://www.mdpi.com/1999-4893/8/2/177 |
| article html file updated | 6 May 2019 20:30 CEST | Update | - |
| article html file updated | 26 March 2019 02:07 CET | Update | - |
| article html file updated | 21 August 2015 11:46 CEST | Update | - |
| article html file updated | 15 July 2015 09:22 CEST | Original file | - |
| article xml file uploaded | 15 July 2015 09:22 CEST | Original file | https://www.mdpi.com/1999-4893/8/2/177/xml |
| article pdf uploaded. | 7 May 2015 11:30 CEST | Version of Record | https://www.mdpi.com/1999-4893/8/2/177/pdf |
