| article html file updated | 8 February 2020 08:15 CET | Update | https://www.mdpi.com/2076-3387/7/2/20 |
| article html file updated | 25 September 2019 08:16 CEST | Update | N/A |
| article html file updated | 3 May 2019 17:31 CEST | Update | N/A |
| article html file updated | 27 October 2017 09:18 CEST | Update | N/A |
| article html file updated | 16 June 2017 03:38 CEST | Original file | N/A |
| article xml uploaded. | 16 June 2017 03:36 CEST | Original file | https://www.mdpi.com/2076-3387/7/2/20/xml |
| article pdf uploaded. | 16 June 2017 03:36 CEST | Updated version of record | https://www.mdpi.com/2076-3387/7/2/20/pdf |
| article pdf uploaded. | 14 June 2017 16:10 CEST | Version of Record | https://www.mdpi.com/2076-3387/7/2/20/pdf-vor |
