| article html file updated | 7 February 2020 05:29 CET | Update | https://www.mdpi.com/2073-4468/5/1/6 |
| article html file updated | 5 May 2019 22:21 CEST | Update | - |
| article html file updated | 26 March 2019 22:39 CET | Update | - |
| article html file updated | 28 March 2016 11:29 CEST | Original file | - |
| article pdf uploaded. | 10 March 2016 11:13 CET | Updated version of record | https://www.mdpi.com/2073-4468/5/1/6/pdf |
| article xml uploaded. | 10 March 2016 11:13 CET | Update | https://www.mdpi.com/2073-4468/5/1/6/xml |
| article pdf uploaded. | 4 March 2016 11:33 CET | Version of Record | https://www.mdpi.com/2073-4468/5/1/6/pdf-vor |
