| article html file updated | 8 February 2020 04:05 CET | Update | https://www.mdpi.com/2072-6694/9/4/37 |
| article html file updated | 24 September 2019 10:38 CEST | Update | - |
| article html file updated | 4 May 2019 01:17 CEST | Update | - |
| article html file updated | 28 April 2017 05:33 CEST | Update | - |
| article html file updated | 21 April 2017 11:55 CEST | Original file | - |
| article xml uploaded. | 21 April 2017 11:53 CEST | Original file | https://www.mdpi.com/2072-6694/9/4/37/xml |
| article pdf uploaded. | 21 April 2017 11:53 CEST | Version of Record | https://www.mdpi.com/2072-6694/9/4/37/pdf |
