| article html file updated | 6 February 2020 17:28 CET | Update | https://www.mdpi.com/2075-1702/3/2/72 |
| article html file updated | 6 May 2019 22:19 CEST | Update | - |
| article html file updated | 26 March 2019 00:20 CET | Update | - |
| article html file updated | 21 August 2015 10:13 CEST | Update | - |
| article html file updated | 30 June 2015 03:11 CEST | Original file | - |
| article xml file uploaded | 30 June 2015 03:11 CEST | Original file | https://www.mdpi.com/2075-1702/3/2/72/xml |
| article pdf uploaded. | 10 April 2015 11:02 CEST | Updated version of record | https://www.mdpi.com/2075-1702/3/2/72/pdf |
| article pdf uploaded. | 9 April 2015 16:40 CEST | Version of Record | https://www.mdpi.com/2075-1702/3/2/72/pdf-vor |
