| article html file updated | 7 February 2020 03:18 CET | Update | https://www.mdpi.com/2072-6651/8/1/20 |
| article html file updated | 6 May 2019 02:49 CEST | Update | N/A |
| article html file updated | 26 March 2019 18:12 CET | Original file | N/A |
| article pdf uploaded. | 12 January 2016 11:16 CET | Version of Record | https://www.mdpi.com/2072-6651/8/1/20/pdf |
| article xml uploaded. | 12 January 2016 11:16 CET | Original file | https://www.mdpi.com/2072-6651/8/1/20/xml |
