| article html file updated | 8 February 2020 07:42 CET | Update | https://www.mdpi.com/2073-4441/9/6/407 |
| article html file updated | 3 May 2019 18:32 CEST | Update | - |
| article html file updated | 29 June 2017 12:13 CEST | Update | - |
| article html file updated | 9 June 2017 03:29 CEST | Original file | - |
| article xml uploaded. | 9 June 2017 03:28 CEST | Original file | https://www.mdpi.com/2073-4441/9/6/407/xml |
| article pdf uploaded. | 9 June 2017 03:28 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/6/407/pdf |
| article pdf uploaded. | 7 June 2017 13:27 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/6/407/pdf-vor |
