| article html file updated | 12 February 2020 04:04 CET | Update | https://www.mdpi.com/1911-8074/12/2/61 |
| article html file updated | 5 July 2019 06:51 CEST | Update | - |
| article html file updated | 30 April 2019 11:15 CEST | Original file | - |
| article pdf uploaded. | 30 April 2019 11:14 CEST | Updated version of record | https://www.mdpi.com/1911-8074/12/2/61/pdf |
| article xml uploaded. | 30 April 2019 11:14 CEST | Update | https://www.mdpi.com/1911-8074/12/2/61/xml |
| article xml file uploaded | 30 April 2019 11:14 CEST | Update | - |
| article pdf uploaded. | 9 April 2019 15:39 CEST | Version of Record | https://www.mdpi.com/1911-8074/12/2/61/pdf-vor |
| article xml file uploaded | 9 April 2019 15:39 CEST | Original file | - |
