| article html file updated | 8 February 2020 04:11 CET | Update | https://www.mdpi.com/2073-4441/9/4/297 |
| article html file updated | 24 September 2019 11:14 CEST | Update | - |
| article html file updated | 4 May 2019 01:06 CEST | Update | - |
| article html file updated | 28 April 2017 11:32 CEST | Update | - |
| article html file updated | 24 April 2017 06:09 CEST | Original file | - |
| article xml uploaded. | 24 April 2017 06:08 CEST | Original file | https://www.mdpi.com/2073-4441/9/4/297/xml |
| article pdf uploaded. | 24 April 2017 06:08 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/4/297/pdf |
| article pdf uploaded. | 22 April 2017 12:07 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/4/297/pdf-vor |
