| article html file updated | 8 February 2020 02:50 CET | Update | https://www.mdpi.com/2073-4441/9/4/251 |
| article html file updated | 24 September 2019 03:39 CEST | Update | N/A |
| article html file updated | 4 May 2019 03:44 CEST | Update | N/A |
| article html file updated | 28 April 2017 11:21 CEST | Update | N/A |
| article html file updated | 18 April 2017 12:10 CEST | Update | N/A |
| article xml uploaded. | 18 April 2017 12:09 CEST | Update | https://www.mdpi.com/2073-4441/9/4/251/xml |
| article pdf uploaded. | 18 April 2017 12:09 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/4/251/pdf |
| article html file updated | 17 April 2017 06:27 CEST | Original file | N/A |
| article pdf uploaded. | 17 April 2017 06:26 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/4/251/pdf-vor |
| article pdf uploaded. | 3 April 2017 09:09 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/4/251/pdf-vor |
