| article html file updated | 9 February 2020 17:52 CET | Update | https://www.mdpi.com/2076-0787/7/2/47 |
| article html file updated | 3 October 2019 15:59 CEST | Update | - |
| article html file updated | 30 April 2019 19:15 CEST | Update | - |
| article html file updated | 16 April 2019 19:43 CEST | Update | - |
| article html file updated | 30 March 2019 01:29 CET | Update | - |
| article html file updated | 16 May 2018 14:04 CEST | Original file | - |
| article pdf uploaded. | 16 May 2018 14:03 CEST | Version of Record | https://www.mdpi.com/2076-0787/7/2/47/pdf |
| article xml uploaded. | 16 May 2018 14:03 CEST | Update | https://www.mdpi.com/2076-0787/7/2/47/xml |
| article xml file uploaded | 16 May 2018 14:03 CEST | Original file | - |
