| article html file updated | 8 February 2020 07:24 CET | Update | https://www.mdpi.com/2072-4292/9/6/556 |
| article html file updated | 25 September 2019 03:50 CEST | Update | N/A |
| article html file updated | 3 May 2019 19:06 CEST | Update | N/A |
| article html file updated | 30 June 2017 09:37 CEST | Update | N/A |
| article html file updated | 3 June 2017 13:12 CEST | Original file | N/A |
| article xml uploaded. | 3 June 2017 13:10 CEST | Original file | https://www.mdpi.com/2072-4292/9/6/556/xml |
| article pdf uploaded. | 3 June 2017 13:10 CEST | Version of Record | https://www.mdpi.com/2072-4292/9/6/556/pdf |
