| article html file updated | 7 February 2020 18:30 CET | Update | https://www.mdpi.com/2073-4441/8/12/549 |
| article html file updated | 4 May 2019 21:33 CEST | Update | N/A |
| article html file updated | 27 December 2016 11:31 CET | Update | N/A |
| article html file updated | 25 November 2016 03:00 CET | Original file | N/A |
| article xml uploaded. | 25 November 2016 02:59 CET | Update | https://www.mdpi.com/2073-4441/8/12/549/xml |
| article xml uploaded. | 25 November 2016 02:59 CET | Original file | N/A |
| article pdf uploaded. | 25 November 2016 02:59 CET | Version of Record | https://www.mdpi.com/2073-4441/8/12/549/pdf |
