| article html file updated | 7 February 2020 07:30 CET | Update | https://www.mdpi.com/2073-8994/8/4/26 |
| article html file updated | 5 May 2019 18:09 CEST | Update | - |
| article html file updated | 27 March 2019 02:22 CET | Update | - |
| article html file updated | 27 April 2016 10:56 CEST | Update | - |
| article html file updated | 20 April 2016 09:56 CEST | Original file | - |
| article xml uploaded. | 20 April 2016 09:55 CEST | Update | https://www.mdpi.com/2073-8994/8/4/26/xml |
| article pdf uploaded. | 20 April 2016 09:55 CEST | Version of Record | https://www.mdpi.com/2073-8994/8/4/26/pdf |
