| article html file updated | 9 February 2020 19:01 CET | Update | https://www.mdpi.com/1999-4907/9/6/293 |
| article html file updated | 3 October 2019 23:05 CEST | Update | - |
| article html file updated | 30 April 2019 16:44 CEST | Update | - |
| article html file updated | 16 April 2019 17:11 CEST | Update | - |
| article html file updated | 30 March 2019 04:34 CET | Update | - |
| article html file updated | 26 June 2018 05:30 CEST | Update | - |
| article html file updated | 25 May 2018 10:52 CEST | Original file | - |
| article pdf uploaded. | 25 May 2018 10:51 CEST | Version of Record | https://www.mdpi.com/1999-4907/9/6/293/pdf |
| article xml uploaded. | 25 May 2018 10:51 CEST | Update | https://www.mdpi.com/1999-4907/9/6/293/xml |
| article xml file uploaded | 25 May 2018 10:51 CEST | Original file | - |
