| article html file updated | 9 February 2020 00:12 CET | Update | https://www.mdpi.com/2076-0760/6/4/150 |
| article html file updated | 2 May 2019 08:19 CEST | Update | - |
| article html file updated | 18 April 2019 06:06 CEST | Update | - |
| article html file updated | 16 December 2017 03:04 CET | Original file | - |
| article xml uploaded. | 16 December 2017 03:02 CET | Original file | https://www.mdpi.com/2076-0760/6/4/150/xml |
| article pdf uploaded. | 16 December 2017 03:02 CET | Updated version of record | https://www.mdpi.com/2076-0760/6/4/150/pdf |
| article pdf uploaded. | 15 December 2017 12:28 CET | Version of Record | https://www.mdpi.com/2076-0760/6/4/150/pdf-vor |
