| article html file updated | 9 February 2020 13:08 CET | Update | https://www.mdpi.com/2227-7102/8/2/47 |
| article html file updated | 1 May 2019 04:51 CEST | Update | - |
| article html file updated | 17 April 2019 05:06 CEST | Update | - |
| article html file updated | 29 March 2019 14:06 CET | Update | - |
| article html file updated | 27 June 2018 09:15 CEST | Update | - |
| article html file updated | 10 April 2018 03:50 CEST | Original file | - |
| article xml uploaded. | 10 April 2018 03:48 CEST | Original file | https://www.mdpi.com/2227-7102/8/2/47/xml |
| article pdf uploaded. | 10 April 2018 03:48 CEST | Version of Record | https://www.mdpi.com/2227-7102/8/2/47/pdf |
