| article html file updated | 12 February 2020 07:32 CET | Update | https://www.mdpi.com/1911-8074/12/2/72 |
| article html file updated | 18 October 2019 22:35 CEST | Update | N/A |
| article html file updated | 5 July 2019 06:52 CEST | Update | N/A |
| article html file updated | 6 May 2019 08:19 CEST | Original file | N/A |
| article pdf uploaded. | 6 May 2019 08:18 CEST | Updated version of record | https://www.mdpi.com/1911-8074/12/2/72/pdf |
| article xml uploaded. | 6 May 2019 08:18 CEST | Update | https://www.mdpi.com/1911-8074/12/2/72/xml |
| article xml file uploaded | 6 May 2019 08:18 CEST | Update | N/A |
| article pdf uploaded. | 24 April 2019 15:22 CEST | Version of Record | https://www.mdpi.com/1911-8074/12/2/72/pdf-vor |
| article xml file uploaded | 24 April 2019 15:22 CEST | Original file | N/A |
