| article html file updated | 8 February 2020 04:06 CET | Update | https://www.mdpi.com/2079-4991/7/4/87 |
| article html file updated | 24 September 2019 10:42 CEST | Update | - |
| article html file updated | 4 May 2019 01:16 CEST | Update | - |
| article html file updated | 21 April 2017 12:26 CEST | Original file | - |
| article xml uploaded. | 21 April 2017 12:25 CEST | Original file | https://www.mdpi.com/2079-4991/7/4/87/xml |
| article pdf uploaded. | 21 April 2017 12:25 CEST | Version of Record | https://www.mdpi.com/2079-4991/7/4/87/pdf |
