| article html file updated | 8 February 2020 03:14 CET | Update | https://www.mdpi.com/2076-0787/6/2/17 |
| article html file updated | 4 May 2019 02:52 CEST | Update | N/A |
| article html file updated | 13 April 2017 05:07 CEST | Update | N/A |
| article html file updated | 12 April 2017 07:50 CEST | Update | N/A |
| article html file updated | 12 April 2017 07:28 CEST | Update | N/A |
| article html file updated | 12 April 2017 05:26 CEST | Update | N/A |
| article html file updated | 10 April 2017 11:15 CEST | Original file | N/A |
| article xml uploaded. | 10 April 2017 11:14 CEST | Original file | https://www.mdpi.com/2076-0787/6/2/17/xml |
| article pdf uploaded. | 10 April 2017 11:14 CEST | Version of Record | https://www.mdpi.com/2076-0787/6/2/17/pdf |
