| article html file updated | 8 February 2020 04:03 CET | Update | https://www.mdpi.com/2072-6643/9/4/411 |
| article html file updated | 24 September 2019 10:27 CEST | Update | - |
| article html file updated | 4 May 2019 01:21 CEST | Update | - |
| article html file updated | 28 April 2017 11:53 CEST | Update | - |
| article html file updated | 24 April 2017 03:42 CEST | Original file | - |
| article xml uploaded. | 24 April 2017 03:41 CEST | Original file | https://www.mdpi.com/2072-6643/9/4/411/xml |
| article pdf uploaded. | 24 April 2017 03:41 CEST | Updated version of record | https://www.mdpi.com/2072-6643/9/4/411/pdf |
| article pdf uploaded. | 20 April 2017 15:01 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/4/411/pdf-vor |
