| article html file updated | 7 February 2020 04:12 CET | Update | https://www.mdpi.com/2073-4352/6/2/17 |
| article html file updated | 6 May 2019 01:08 CEST | Update | N/A |
| article html file updated | 26 March 2019 19:57 CET | Original file | N/A |
| article pdf uploaded. | 2 February 2016 11:07 CET | Version of Record | https://www.mdpi.com/2073-4352/6/2/17/pdf |
| article xml uploaded. | 2 February 2016 11:07 CET | Original file | https://www.mdpi.com/2073-4352/6/2/17/xml |
