| article html file updated | 11 February 2020 07:44 CET | Update | https://www.mdpi.com/2076-0787/8/1/7 |
| article html file updated | 27 April 2019 09:13 CEST | Update | N/A |
| article html file updated | 13 April 2019 05:12 CEST | Update | N/A |
| article html file updated | 3 April 2019 00:32 CEST | Update | N/A |
| article html file updated | 9 January 2019 15:01 CET | Original file | N/A |
| article xml uploaded. | 9 January 2019 14:59 CET | Original file | https://www.mdpi.com/2076-0787/8/1/7/xml |
| article pdf uploaded. | 9 January 2019 14:59 CET | Version of Record | https://www.mdpi.com/2076-0787/8/1/7/pdf |
