| article html file updated | 8 February 2020 08:46 CET | Update | https://www.mdpi.com/2073-4441/9/6/444 |
| article html file updated | 25 September 2019 10:57 CEST | Update | - |
| article html file updated | 3 May 2019 16:32 CEST | Update | - |
| article html file updated | 29 June 2017 12:19 CEST | Update | - |
| article html file updated | 22 June 2017 06:30 CEST | Original file | - |
| article xml uploaded. | 22 June 2017 06:28 CEST | Original file | https://www.mdpi.com/2073-4441/9/6/444/xml |
| article pdf uploaded. | 22 June 2017 06:28 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/6/444/pdf |
| article pdf uploaded. | 20 June 2017 12:06 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/6/444/pdf-vor |
