| article html file updated | 8 February 2020 03:49 CET | Update | https://www.mdpi.com/2076-0787/6/2/24 |
| article html file updated | 4 May 2019 01:46 CEST | Update | N/A |
| article html file updated | 17 May 2017 04:28 CEST | Original file | N/A |
| article xml uploaded. | 18 April 2017 12:13 CEST | Original file | https://www.mdpi.com/2076-0787/6/2/24/xml |
| article pdf uploaded. | 18 April 2017 12:13 CEST | Version of Record | https://www.mdpi.com/2076-0787/6/2/24/pdf |
