| article html file updated | 6 February 2020 08:31 CET | Update | https://www.mdpi.com/2075-1729/4/2/131 |
| article html file updated | 7 May 2019 16:03 CEST | Update | - |
| article html file updated | 21 March 2019 15:20 CET | Update | - |
| article html file updated | 20 August 2015 02:52 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/2075-1729/4/2/131/xml |
| article pdf uploaded. | 10 April 2014 13:54 CEST | Version of Record | https://www.mdpi.com/2075-1729/4/2/131/pdf |
