| article html file updated | 7 February 2020 14:54 CET | Update | https://www.mdpi.com/2073-4441/8/9/400 |
| article html file updated | 5 May 2019 04:15 CEST | Update | N/A |
| article html file updated | 28 September 2016 07:32 CEST | Update | N/A |
| article html file updated | 13 September 2016 22:41 CEST | Original file | N/A |
| article xml uploaded. | 13 September 2016 11:50 CEST | Update | https://www.mdpi.com/2073-4441/8/9/400/xml |
| article xml uploaded. | 13 September 2016 11:50 CEST | Original file | N/A |
| article pdf uploaded. | 13 September 2016 11:50 CEST | Version of Record | https://www.mdpi.com/2073-4441/8/9/400/pdf |
