| article html file updated | 8 February 2020 02:30 CET | Update | https://www.mdpi.com/2072-6643/9/4/337 |
| article html file updated | 24 September 2019 01:37 CEST | Update | - |
| article html file updated | 4 May 2019 04:30 CEST | Update | - |
| article html file updated | 28 April 2017 11:45 CEST | Update | - |
| article html file updated | 29 March 2017 15:55 CEST | Original file | - |
| article xml uploaded. | 29 March 2017 15:53 CEST | Original file | https://www.mdpi.com/2072-6643/9/4/337/xml |
| article pdf uploaded. | 29 March 2017 15:53 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/4/337/pdf |
