| article html file updated | 7 February 2020 04:20 CET | Update | https://www.mdpi.com/2076-0787/5/1/14 |
| article html file updated | 6 May 2019 00:51 CEST | Update | N/A |
| article html file updated | 26 March 2019 20:14 CET | Original file | N/A |
| article pdf uploaded. | 5 February 2016 09:07 CET | Version of Record | https://www.mdpi.com/2076-0787/5/1/14/pdf |
| article xml uploaded. | 5 February 2016 09:07 CET | Original file | https://www.mdpi.com/2076-0787/5/1/14/xml |
