| article html file updated | 8 February 2020 03:22 CET | Update | https://www.mdpi.com/2075-163X/7/4/56 |
| article html file updated | 24 September 2019 06:34 CEST | Update | - |
| article html file updated | 4 May 2019 02:37 CEST | Update | - |
| article html file updated | 28 April 2017 10:02 CEST | Update | - |
| article html file updated | 11 April 2017 14:55 CEST | Original file | - |
| article xml uploaded. | 11 April 2017 14:54 CEST | Original file | https://www.mdpi.com/2075-163X/7/4/56/xml |
| article pdf uploaded. | 11 April 2017 14:54 CEST | Version of Record | https://www.mdpi.com/2075-163X/7/4/56/pdf |
