| article html file updated | 7 February 2020 02:58 CET | Update | https://www.mdpi.com/2072-6643/8/1/9 |
| article html file updated | 6 May 2019 03:28 CEST | Update | N/A |
| article html file updated | 26 March 2019 17:37 CET | Original file | N/A |
| article pdf uploaded. | 2 January 2016 05:03 CET | Version of Record | https://www.mdpi.com/2072-6643/8/1/9/pdf |
| article xml uploaded. | 2 January 2016 05:03 CET | Original file | https://www.mdpi.com/2072-6643/8/1/9/xml |
