| article html file updated | 6 February 2020 07:41 CET | Update | https://www.mdpi.com/2075-1729/4/1/107 |
| article html file updated | 7 May 2019 17:47 CEST | Update | - |
| article html file updated | 21 March 2019 13:20 CET | Update | - |
| article html file updated | 19 August 2015 22:32 CEST | Update | - |
| article html file updated | 26 August 2014 04:21 CEST | Update | - |
| article xml file uploaded | 26 August 2014 04:21 CEST | Update | https://www.mdpi.com/2075-1729/4/1/107/xml |
| article html file updated | 24 June 2014 12:13 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:13 CEST | Original file | - |
| article pdf uploaded. | 5 March 2014 16:38 CET | Updated version of record | https://www.mdpi.com/2075-1729/4/1/107/pdf |
| article pdf uploaded. | 4 March 2014 15:01 CET | Version of Record | https://www.mdpi.com/2075-1729/4/1/107/pdf-vor |
