| article html file updated | 8 February 2020 01:10 CET | Update | https://www.mdpi.com/2227-7102/7/1/40 |
| article html file updated | 4 May 2019 07:23 CEST | Update | - |
| article html file updated | 27 October 2017 09:57 CEST | Update | - |
| article html file updated | 10 March 2017 06:44 CET | Original file | - |
| article xml uploaded. | 10 March 2017 06:43 CET | Original file | https://www.mdpi.com/2227-7102/7/1/40/xml |
| article pdf uploaded. | 10 March 2017 06:43 CET | Version of Record | https://www.mdpi.com/2227-7102/7/1/40/pdf |
