| article html file updated | 7 February 2020 22:30 CET | Update | https://www.mdpi.com/2073-4441/9/2/79 |
| article html file updated | 23 September 2019 03:02 CEST | Update | - |
| article html file updated | 4 May 2019 13:03 CEST | Update | - |
| article html file updated | 1 March 2017 07:54 CET | Update | - |
| article html file updated | 11 February 2017 07:18 CET | Original file | - |
| article xml uploaded. | 11 February 2017 07:17 CET | Original file | https://www.mdpi.com/2073-4441/9/2/79/xml |
| article pdf uploaded. | 11 February 2017 07:17 CET | Updated version of record | https://www.mdpi.com/2073-4441/9/2/79/pdf |
| article pdf uploaded. | 30 January 2017 16:14 CET | Version of Record | https://www.mdpi.com/2073-4441/9/2/79/pdf-vor |
