| article html file updated | 7 February 2020 22:14 CET | Update | https://www.mdpi.com/2073-4441/9/2/75 |
| article html file updated | 23 September 2019 01:36 CEST | Update | - |
| article html file updated | 4 May 2019 13:34 CEST | Update | - |
| article html file updated | 1 March 2017 07:49 CET | Update | - |
| article html file updated | 25 January 2017 11:48 CET | Original file | - |
| article xml uploaded. | 25 January 2017 11:46 CET | Original file | https://www.mdpi.com/2073-4441/9/2/75/xml |
| article pdf uploaded. | 25 January 2017 11:46 CET | Version of Record | https://www.mdpi.com/2073-4441/9/2/75/pdf |
