| article html file updated | 8 February 2020 03:02 CET | Update | https://www.mdpi.com/2073-4441/9/4/259 |
| article html file updated | 24 September 2019 04:47 CEST | Update | - |
| article html file updated | 4 May 2019 03:16 CEST | Update | - |
| article html file updated | 28 April 2017 11:23 CEST | Update | - |
| article pdf uploaded. | 6 April 2017 13:20 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/4/259/pdf |
| article html file updated | 6 April 2017 12:52 CEST | Original file | - |
| article xml uploaded. | 6 April 2017 12:50 CEST | Update | https://www.mdpi.com/2073-4441/9/4/259/xml |
