| article html file updated | 7 February 2020 10:18 CET | Update | https://www.mdpi.com/2072-6694/8/6/56 |
| article html file updated | 5 May 2019 12:42 CEST | Update | N/A |
| article html file updated | 27 March 2019 07:44 CET | Update | N/A |
| article html file updated | 4 July 2016 12:41 CEST | Update | N/A |
| article html file updated | 16 June 2016 14:00 CEST | Original file | N/A |
| article xml uploaded. | 16 June 2016 13:59 CEST | Original file | https://www.mdpi.com/2072-6694/8/6/56/xml |
| article pdf uploaded. | 16 June 2016 13:59 CEST | Version of Record | https://www.mdpi.com/2072-6694/8/6/56/pdf |
