| article html file updated | 8 February 2020 07:30 CET | Update | https://www.mdpi.com/2073-4441/9/6/402 |
| article html file updated | 25 September 2019 04:24 CEST | Update | - |
| article html file updated | 3 May 2019 18:54 CEST | Update | - |
| article html file updated | 29 June 2017 12:13 CEST | Update | - |
| article html file updated | 6 June 2017 12:34 CEST | Original file | - |
| article xml uploaded. | 6 June 2017 12:32 CEST | Original file | https://www.mdpi.com/2073-4441/9/6/402/xml |
| article pdf uploaded. | 6 June 2017 12:32 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/6/402/pdf |
| article pdf uploaded. | 5 June 2017 12:09 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/6/402/pdf-vor |
