| article html file updated | 9 February 2020 00:26 CET | Update | https://www.mdpi.com/2076-0760/6/4/152 |
| article html file updated | 29 September 2019 07:20 CEST | Update | - |
| article html file updated | 2 May 2019 07:47 CEST | Update | - |
| article html file updated | 18 April 2019 05:37 CEST | Update | - |
| article html file updated | 19 December 2017 14:40 CET | Original file | - |
| article xml uploaded. | 19 December 2017 14:39 CET | Original file | https://www.mdpi.com/2076-0760/6/4/152/xml |
| article pdf uploaded. | 19 December 2017 14:39 CET | Updated version of record | https://www.mdpi.com/2076-0760/6/4/152/pdf |
| article pdf uploaded. | 18 December 2017 15:37 CET | Version of Record | - |
