| article html file updated | 12 February 2020 16:36 CET | Update | https://www.mdpi.com/2073-4344/9/6/501 |
| article html file updated | 21 October 2019 01:55 CEST | Update | - |
| article html file updated | 3 July 2019 15:44 CEST | Update | - |
| article html file updated | 31 May 2019 10:03 CEST | Original file | - |
| article pdf uploaded. | 31 May 2019 10:01 CEST | Version of Record | https://www.mdpi.com/2073-4344/9/6/501/pdf |
| article xml uploaded. | 31 May 2019 10:01 CEST | Update | https://www.mdpi.com/2073-4344/9/6/501/xml |
| article xml file uploaded | 31 May 2019 10:01 CEST | Original file | - |
