| article html file updated | 6 February 2020 08:50 CET | Update | https://www.mdpi.com/2075-1729/4/2/174 |
| article html file updated | 7 May 2019 15:24 CEST | Update | - |
| article html file updated | 21 March 2019 16:06 CET | Update | - |
| article html file updated | 20 August 2015 04:27 CEST | Update | - |
| article html file updated | 26 August 2014 04:22 CEST | Original file | - |
| article xml file uploaded | 26 August 2014 04:22 CEST | Original file | https://www.mdpi.com/2075-1729/4/2/174/xml |
| article pdf uploaded. | 24 April 2014 10:00 CEST | Version of Record | https://www.mdpi.com/2075-1729/4/2/174/pdf |
