| article html file updated | 6 February 2020 09:39 CET | Update | https://www.mdpi.com/2075-1729/4/2/267 |
| article html file updated | 7 May 2019 13:45 CEST | Update | - |
| article html file updated | 21 March 2019 18:01 CET | Update | - |
| article html file updated | 20 August 2015 08:51 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/2075-1729/4/2/267/xml |
| article pdf uploaded. | 30 May 2014 14:08 CEST | Version of Record | https://www.mdpi.com/2075-1729/4/2/267/pdf |
