| article html file updated | 7 February 2020 23:00 CET | Update | https://www.mdpi.com/2073-4395/7/1/8 |
| article html file updated | 23 September 2019 05:52 CEST | Update | - |
| article html file updated | 4 May 2019 12:00 CEST | Update | - |
| article html file updated | 27 March 2017 09:41 CEST | Update | - |
| article html file updated | 16 February 2017 10:16 CET | Original file | - |
| article xml uploaded. | 16 February 2017 10:15 CET | Original file | https://www.mdpi.com/2073-4395/7/1/8/xml |
| article pdf uploaded. | 16 February 2017 10:15 CET | Updated version of record | https://www.mdpi.com/2073-4395/7/1/8/pdf |
| article pdf uploaded. | 9 February 2017 16:43 CET | Version of Record | https://www.mdpi.com/2073-4395/7/1/8/pdf-vor |
