| article html file updated | 8 February 2020 04:09 CET | Update | https://www.mdpi.com/2227-7080/5/2/19 |
| article html file updated | 24 September 2019 11:01 CEST | Update | - |
| article html file updated | 4 May 2019 01:09 CEST | Update | - |
| article html file updated | 29 June 2017 11:54 CEST | Update | - |
| article html file updated | 22 April 2017 06:05 CEST | Original file | - |
| article xml uploaded. | 22 April 2017 06:04 CEST | Original file | https://www.mdpi.com/2227-7080/5/2/19/xml |
| article pdf uploaded. | 22 April 2017 06:04 CEST | Version of Record | https://www.mdpi.com/2227-7080/5/2/19/pdf |
