| article html file updated | 9 February 2020 00:25 CET | Update | https://www.mdpi.com/2218-1997/3/4/85 |
| article html file updated | 2 May 2019 07:50 CEST | Update | N/A |
| article html file updated | 18 April 2019 05:39 CEST | Update | N/A |
| article html file updated | 2 January 2018 14:47 CET | Update | N/A |
| article html file updated | 18 December 2017 13:09 CET | Original file | N/A |
| article xml uploaded. | 18 December 2017 13:08 CET | Original file | https://www.mdpi.com/2218-1997/3/4/85/xml |
| article pdf uploaded. | 18 December 2017 13:08 CET | Version of Record | https://www.mdpi.com/2218-1997/3/4/85/pdf |
