| article html file updated | 8 February 2020 20:34 CET | Update | https://www.mdpi.com/2304-6740/5/4/75 |
| article html file updated | 28 September 2019 07:18 CEST | Update | - |
| article html file updated | 2 May 2019 16:26 CEST | Update | - |
| article html file updated | 2 January 2018 13:53 CET | Update | - |
| article html file updated | 7 November 2017 13:49 CET | Original file | - |
| article xml uploaded. | 7 November 2017 13:48 CET | Original file | https://www.mdpi.com/2304-6740/5/4/75/xml |
| article pdf uploaded. | 7 November 2017 13:48 CET | Version of Record | https://www.mdpi.com/2304-6740/5/4/75/pdf |
