| article html file updated | 8 February 2020 03:08 CET | Update | https://www.mdpi.com/2072-6651/9/4/130 |
| article html file updated | 24 September 2019 05:20 CEST | Update | - |
| article html file updated | 4 May 2019 03:05 CEST | Update | - |
| article html file updated | 28 April 2017 11:15 CEST | Update | - |
| article html file updated | 10 April 2017 04:58 CEST | Original file | - |
| article xml uploaded. | 10 April 2017 04:57 CEST | Original file | https://www.mdpi.com/2072-6651/9/4/130/xml |
| article pdf uploaded. | 10 April 2017 04:57 CEST | Updated version of record | https://www.mdpi.com/2072-6651/9/4/130/pdf |
| article pdf uploaded. | 7 April 2017 14:35 CEST | Version of Record | https://www.mdpi.com/2072-6651/9/4/130/pdf-vor |
