| article html file updated | 10 February 2020 19:56 CET | Update | https://www.mdpi.com/2075-1702/6/4/57 |
| article html file updated | 10 October 2019 02:10 CEST | Update | - |
| article html file updated | 28 April 2019 11:35 CEST | Update | - |
| article html file updated | 14 April 2019 06:58 CEST | Update | - |
| article html file updated | 1 April 2019 17:23 CEST | Update | - |
| article html file updated | 26 December 2018 03:46 CET | Update | - |
| article html file updated | 6 November 2018 12:16 CET | Original file | - |
| article pdf uploaded. | 6 November 2018 12:15 CET | Version of Record | https://www.mdpi.com/2075-1702/6/4/57/pdf |
| article xml uploaded. | 6 November 2018 12:15 CET | Update | https://www.mdpi.com/2075-1702/6/4/57/xml |
| article xml file uploaded | 6 November 2018 12:15 CET | Original file | - |
