| article html file updated | 8 February 2020 03:01 CET | Update | https://www.mdpi.com/2076-3425/7/4/38 |
| article html file updated | 24 September 2019 04:37 CEST | Update | - |
| article html file updated | 4 May 2019 03:20 CEST | Update | - |
| article html file updated | 28 April 2017 05:33 CEST | Update | - |
| article html file updated | 10 April 2017 10:27 CEST | Original file | - |
| article xml uploaded. | 10 April 2017 10:25 CEST | Original file | https://www.mdpi.com/2076-3425/7/4/38/xml |
| article pdf uploaded. | 10 April 2017 10:25 CEST | Updated version of record | https://www.mdpi.com/2076-3425/7/4/38/pdf |
| article pdf uploaded. | 6 April 2017 14:53 CEST | Version of Record | https://www.mdpi.com/2076-3425/7/4/38/pdf-vor |
