| article html file updated | 8 February 2020 03:31 CET | Update | https://www.mdpi.com/2227-7102/7/2/47 |
| article html file updated | 24 September 2019 07:21 CEST | Update | - |
| article html file updated | 4 May 2019 02:20 CEST | Update | - |
| article html file updated | 27 October 2017 09:58 CEST | Update | - |
| article html file updated | 13 April 2017 15:26 CEST | Update | - |
| article html file updated | 13 April 2017 15:26 CEST | Original file | - |
| article xml uploaded. | 13 April 2017 15:25 CEST | Original file | https://www.mdpi.com/2227-7102/7/2/47/xml |
| article pdf uploaded. | 13 April 2017 15:25 CEST | Version of Record | https://www.mdpi.com/2227-7102/7/2/47/pdf |
