| article html file updated | 9 February 2020 07:27 CET | Update | https://www.mdpi.com/2076-0760/7/2/31 |
| article html file updated | 1 October 2019 00:05 CEST | Update | N/A |
| article html file updated | 1 May 2019 16:43 CEST | Update | N/A |
| article html file updated | 17 April 2019 16:07 CEST | Update | N/A |
| article html file updated | 29 March 2019 01:04 CET | Update | N/A |
| article html file updated | 24 February 2018 06:35 CET | Original file | N/A |
| article xml uploaded. | 24 February 2018 06:34 CET | Original file | https://www.mdpi.com/2076-0760/7/2/31/xml |
| article pdf uploaded. | 24 February 2018 06:34 CET | Version of Record | https://www.mdpi.com/2076-0760/7/2/31/pdf |
