| article html file updated | 12 February 2020 01:31 CET | Update | https://www.mdpi.com/2226-4310/6/4/39 |
| article html file updated | 17 October 2019 08:57 CEST | Update | N/A |
| article html file updated | 8 May 2019 19:05 CEST | Update | N/A |
| article html file updated | 25 April 2019 20:03 CEST | Update | N/A |
| article html file updated | 12 April 2019 10:55 CEST | Original file | N/A |
| article pdf uploaded. | 12 April 2019 10:54 CEST | Updated version of record | https://www.mdpi.com/2226-4310/6/4/39/pdf |
| article xml uploaded. | 12 April 2019 10:54 CEST | Update | https://www.mdpi.com/2226-4310/6/4/39/xml |
| article xml file uploaded | 12 April 2019 10:54 CEST | Update | N/A |
| article pdf uploaded. | 28 March 2019 17:12 CET | Version of Record | https://www.mdpi.com/2226-4310/6/4/39/pdf-vor |
| article xml file uploaded | 28 March 2019 17:12 CET | Original file | N/A |
