| article html file updated | 8 February 2020 23:48 CET | Update | https://www.mdpi.com/2076-0760/6/4/149 |
| article html file updated | 29 September 2019 03:33 CEST | Update | N/A |
| article html file updated | 2 May 2019 09:10 CEST | Update | N/A |
| article html file updated | 18 April 2019 06:55 CEST | Update | N/A |
| article html file updated | 12 December 2017 23:30 CET | Original file | N/A |
| article xml uploaded. | 12 December 2017 05:32 CET | Original file | https://www.mdpi.com/2076-0760/6/4/149/xml |
| article pdf uploaded. | 12 December 2017 05:32 CET | Version of Record | https://www.mdpi.com/2076-0760/6/4/149/pdf |
