| article html file updated | 7 February 2020 18:12 CET | Update | https://www.mdpi.com/2079-9284/3/4/39 |
| article html file updated | 22 September 2019 05:59 CEST | Update | - |
| article html file updated | 4 May 2019 22:09 CEST | Update | - |
| article html file updated | 18 November 2016 09:31 CET | Original file | - |
| article xml uploaded. | 18 November 2016 09:30 CET | Original file | https://www.mdpi.com/2079-9284/3/4/39/xml |
| article pdf uploaded. | 18 November 2016 09:30 CET | Version of Record | https://www.mdpi.com/2079-9284/3/4/39/pdf |
