| article html file updated | 7 February 2020 11:11 CET | Update | https://www.mdpi.com/2227-9091/4/3/20 |
| article html file updated | 5 May 2019 11:04 CEST | Update | - |
| article html file updated | 27 March 2019 09:19 CET | Update | - |
| article html file updated | 29 September 2016 09:43 CEST | Update | - |
| article html file updated | 4 July 2016 10:52 CEST | Original file | - |
| article xml uploaded. | 4 July 2016 10:50 CEST | Original file | https://www.mdpi.com/2227-9091/4/3/20/xml |
| article pdf uploaded. | 4 July 2016 10:50 CEST | Version of Record | https://www.mdpi.com/2227-9091/4/3/20/pdf |
