| article html file updated | 8 February 2020 03:48 CET | Update | https://www.mdpi.com/2227-7080/5/2/16 |
| article html file updated | 24 September 2019 09:04 CEST | Update | - |
| article html file updated | 4 May 2019 01:47 CEST | Update | - |
| article html file updated | 29 June 2017 11:54 CEST | Update | - |
| article html file updated | 18 April 2017 12:01 CEST | Original file | - |
| article xml uploaded. | 18 April 2017 11:59 CEST | Original file | https://www.mdpi.com/2227-7080/5/2/16/xml |
| article pdf uploaded. | 18 April 2017 11:59 CEST | Version of Record | https://www.mdpi.com/2227-7080/5/2/16/pdf |
