| article html file updated | 8 February 2020 03:43 CET | Update | https://www.mdpi.com/2076-3387/7/2/8 |
| article html file updated | 24 September 2019 08:32 CEST | Update | N/A |
| article html file updated | 4 May 2019 01:58 CEST | Update | N/A |
| article html file updated | 27 October 2017 09:17 CEST | Update | N/A |
| article html file updated | 21 April 2017 09:42 CEST | Update | N/A |
| article xml uploaded. | 21 April 2017 09:41 CEST | Update | https://www.mdpi.com/2076-3387/7/2/8/xml |
| article pdf uploaded. | 21 April 2017 09:41 CEST | Updated version of record | https://www.mdpi.com/2076-3387/7/2/8/pdf |
| article html file updated | 17 April 2017 07:59 CEST | Original file | N/A |
| article pdf uploaded. | 17 April 2017 07:57 CEST | Version of Record | https://www.mdpi.com/2076-3387/7/2/8/pdf-vor |
