| article html file updated | 7 February 2020 03:14 CET | Update | https://www.mdpi.com/2072-6651/8/1/18 |
| article html file updated | 6 May 2019 02:58 CEST | Update | - |
| article html file updated | 26 March 2019 18:03 CET | Original file | - |
| article pdf uploaded. | 8 January 2016 15:19 CET | Version of Record | https://www.mdpi.com/2072-6651/8/1/18/pdf |
| article xml uploaded. | 8 January 2016 15:19 CET | Original file | https://www.mdpi.com/2072-6651/8/1/18/xml |
