| article html file updated | 8 February 2020 04:13 CET | Update | https://www.mdpi.com/2073-8994/9/4/59 |
| article html file updated | 24 September 2019 11:25 CEST | Update | - |
| article html file updated | 4 May 2019 01:02 CEST | Update | - |
| article html file updated | 28 April 2017 07:16 CEST | Update | - |
| article html file updated | 24 April 2017 11:25 CEST | Original file | - |
| article xml uploaded. | 24 April 2017 11:24 CEST | Original file | https://www.mdpi.com/2073-8994/9/4/59/xml |
| article pdf uploaded. | 24 April 2017 11:24 CEST | Updated version of record | https://www.mdpi.com/2073-8994/9/4/59/pdf |
| article pdf uploaded. | 23 April 2017 11:35 CEST | Version of Record | https://www.mdpi.com/2073-8994/9/4/59/pdf-vor |
