| article html file updated | 10 February 2020 19:01 CET | Update | https://www.mdpi.com/2075-1702/6/4/56 |
| article html file updated | 9 October 2019 20:46 CEST | Update | N/A |
| article html file updated | 28 April 2019 13:36 CEST | Update | N/A |
| article html file updated | 14 April 2019 08:49 CEST | Update | N/A |
| article html file updated | 1 April 2019 15:01 CEST | Update | N/A |
| article html file updated | 26 December 2018 03:46 CET | Update | N/A |
| article html file updated | 1 November 2018 08:45 CET | Original file | N/A |
| article pdf uploaded. | 1 November 2018 08:44 CET | Version of Record | https://www.mdpi.com/2075-1702/6/4/56/pdf |
| article xml uploaded. | 1 November 2018 08:44 CET | Update | https://www.mdpi.com/2075-1702/6/4/56/xml |
| article xml file uploaded | 1 November 2018 08:44 CET | Original file | N/A |
