| article html file updated | 8 February 2020 19:18 CET | Update | https://www.mdpi.com/2076-3387/7/4/37 |
| article html file updated | 27 September 2019 23:21 CEST | Update | - |
| article html file updated | 2 May 2019 19:21 CEST | Update | - |
| article html file updated | 2 January 2018 14:09 CET | Update | - |
| article html file updated | 24 October 2017 12:01 CEST | Original file | - |
| article xml uploaded. | 24 October 2017 12:00 CEST | Original file | https://www.mdpi.com/2076-3387/7/4/37/xml |
| article pdf uploaded. | 24 October 2017 12:00 CEST | Version of Record | https://www.mdpi.com/2076-3387/7/4/37/pdf |
