| article html file updated | 8 February 2020 03:49 CET | Update | https://www.mdpi.com/2072-6643/9/4/394 |
| article html file updated | 24 September 2019 09:05 CEST | Update | - |
| article html file updated | 4 May 2019 01:47 CEST | Update | - |
| article html file updated | 28 April 2017 11:51 CEST | Update | - |
| article html file updated | 18 April 2017 12:06 CEST | Original file | - |
| article xml uploaded. | 18 April 2017 12:04 CEST | Original file | https://www.mdpi.com/2072-6643/9/4/394/xml |
| article pdf uploaded. | 18 April 2017 12:04 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/4/394/pdf |
