| article html file updated | 10 February 2020 20:18 CET | Update | https://www.mdpi.com/2227-7072/6/4/91 |
| article html file updated | 28 April 2019 10:44 CEST | Update | - |
| article html file updated | 14 April 2019 06:10 CEST | Update | - |
| article html file updated | 1 April 2019 18:20 CEST | Update | - |
| article html file updated | 26 December 2018 11:39 CET | Update | - |
| article html file updated | 8 November 2018 10:56 CET | Original file | - |
| article pdf uploaded. | 8 November 2018 10:55 CET | Version of Record | https://www.mdpi.com/2227-7072/6/4/91/pdf |
| article xml uploaded. | 8 November 2018 10:55 CET | Update | https://www.mdpi.com/2227-7072/6/4/91/xml |
| article xml file uploaded | 8 November 2018 10:55 CET | Original file | - |
