| article html file updated | 9 February 2020 12:10 CET | Update | https://www.mdpi.com/2077-0383/7/4/67 |
| article html file updated | 2 October 2019 04:52 CEST | Update | - |
| article html file updated | 1 May 2019 06:48 CEST | Update | - |
| article html file updated | 17 April 2019 06:51 CEST | Update | - |
| article html file updated | 29 March 2019 11:54 CET | Update | - |
| article html file updated | 1 May 2018 05:28 CEST | Update | - |
| article html file updated | 3 April 2018 12:40 CEST | Update | - |
| article html file updated | 2 April 2018 23:31 CEST | Original file | - |
| article xml uploaded. | 2 April 2018 05:15 CEST | Original file | https://www.mdpi.com/2077-0383/7/4/67/xml |
| article pdf uploaded. | 2 April 2018 05:15 CEST | Version of Record | https://www.mdpi.com/2077-0383/7/4/67/pdf |
