| article html file updated | 12 February 2020 01:30 CET | Update | https://www.mdpi.com/2075-4701/9/4/391 |
| article html file updated | 17 October 2019 08:52 CEST | Update | N/A |
| article html file updated | 25 April 2019 20:04 CEST | Update | N/A |
| article html file updated | 12 April 2019 15:12 CEST | Original file | N/A |
| article pdf uploaded. | 12 April 2019 15:11 CEST | Updated version of record | https://www.mdpi.com/2075-4701/9/4/391/pdf |
| article xml uploaded. | 12 April 2019 15:11 CEST | Update | https://www.mdpi.com/2075-4701/9/4/391/xml |
| article xml file uploaded | 12 April 2019 15:11 CEST | Update | N/A |
| article pdf uploaded. | 28 March 2019 16:46 CET | Version of Record | https://www.mdpi.com/2075-4701/9/4/391/pdf-vor |
| article xml file uploaded | 28 March 2019 16:46 CET | Original file | N/A |
