| article html file updated | 6 February 2020 07:17 CET | Update | https://www.mdpi.com/2075-4426/4/1/20 |
| article html file updated | 20 September 2019 05:55 CEST | Update | - |
| article html file updated | 7 May 2019 18:35 CEST | Update | - |
| article html file updated | 21 March 2019 12:24 CET | Update | - |
| article html file updated | 19 August 2015 20:34 CEST | Update | - |
| article html file updated | 21 July 2014 03:43 CEST | Original file | - |
| article xml file uploaded | 21 July 2014 03:43 CEST | Original file | https://www.mdpi.com/2075-4426/4/1/20/xml |
| article supplementary file uploaded. | 18 February 2014 08:38 CET | - | https://www.mdpi.com/2075-4426/4/1/20#supplementary |
| article pdf uploaded. | 18 February 2014 08:38 CET | Version of Record | https://www.mdpi.com/2075-4426/4/1/20/pdf |
