| article html file updated | 8 February 2020 04:16 CET | Update | https://www.mdpi.com/2077-1444/8/4/75 |
| article html file updated | 4 May 2019 00:57 CEST | Update | - |
| article html file updated | 28 April 2017 07:14 CEST | Update | - |
| article html file updated | 24 April 2017 12:35 CEST | Update | - |
| article html file updated | 24 April 2017 12:35 CEST | Update | - |
| article html file updated | 24 April 2017 12:34 CEST | Original file | - |
| article xml uploaded. | 24 April 2017 12:33 CEST | Original file | https://www.mdpi.com/2077-1444/8/4/75/xml |
| article pdf uploaded. | 24 April 2017 12:33 CEST | Version of Record | https://www.mdpi.com/2077-1444/8/4/75/pdf |
