| article html file updated | 9 February 2020 00:12 CET | Update | https://www.mdpi.com/2073-4441/9/12/981 |
| article html file updated | 29 September 2019 05:57 CEST | Update | - |
| article html file updated | 2 May 2019 08:18 CEST | Update | - |
| article html file updated | 18 April 2019 06:05 CEST | Update | - |
| article html file updated | 2 January 2018 16:53 CET | Update | - |
| article html file updated | 15 December 2017 16:48 CET | Original file | - |
| article xml uploaded. | 15 December 2017 16:47 CET | Update | https://www.mdpi.com/2073-4441/9/12/981/xml |
| article xml uploaded. | 15 December 2017 16:47 CET | Original file | - |
| article pdf uploaded. | 15 December 2017 16:47 CET | Updated version of record | https://www.mdpi.com/2073-4441/9/12/981/pdf |
| article pdf uploaded. | 15 December 2017 12:15 CET | Version of Record | - |
