| article html file updated | 7 February 2020 04:24 CET | Update | https://www.mdpi.com/2075-5309/6/1/7 |
| article html file updated | 6 May 2019 00:42 CEST | Update | - |
| article html file updated | 26 March 2019 20:24 CET | Update | - |
| article html file updated | 16 June 2016 05:55 CEST | Original file | - |
| article pdf uploaded. | 17 February 2016 04:38 CET | Updated version of record | https://www.mdpi.com/2075-5309/6/1/7/pdf |
| article xml uploaded. | 17 February 2016 04:38 CET | Original file | https://www.mdpi.com/2075-5309/6/1/7/xml |
| article pdf uploaded. | 6 February 2016 09:26 CET | Version of Record | https://www.mdpi.com/2075-5309/6/1/7/pdf-vor |
