| article html file updated | 23 February 2021 07:26 CET | Update | https://www.mdpi.com/2079-3200/3/4/158 |
| article html file updated | 7 February 2020 01:34 CET | Update | - |
| article html file updated | 21 September 2019 06:55 CEST | Update | - |
| article html file updated | 6 May 2019 06:20 CEST | Update | - |
| article html file updated | 26 March 2019 15:23 CET | Original file | - |
| article xml uploaded. | 1 December 2015 14:08 CET | Original file | https://www.mdpi.com/2079-3200/3/4/158/xml |
| article pdf uploaded. | 1 December 2015 14:08 CET | Version of Record | https://www.mdpi.com/2079-3200/3/4/158/pdf |
