| article html file updated | 8 February 2020 19:38 CET | Update | https://www.mdpi.com/2076-0760/6/4/128 |
| article html file updated | 2 May 2019 18:33 CEST | Update | N/A |
| article html file updated | 28 October 2017 12:00 CEST | Original file | N/A |
| article xml uploaded. | 28 October 2017 11:59 CEST | Original file | https://www.mdpi.com/2076-0760/6/4/128/xml |
| article pdf uploaded. | 28 October 2017 11:59 CEST | Updated version of record | https://www.mdpi.com/2076-0760/6/4/128/pdf |
| article pdf uploaded. | 27 October 2017 12:43 CEST | Version of Record | https://www.mdpi.com/2076-0760/6/4/128/pdf-vor |
