| article html file updated | 8 February 2020 06:57 CET | Update | https://new.mdpi.com/2227-7080/5/2/27 |
| article html file updated | 25 September 2019 01:35 CEST | Update | - |
| article html file updated | 3 May 2019 19:58 CEST | Update | - |
| article html file updated | 29 June 2017 11:56 CEST | Update | - |
| article html file updated | 1 June 2017 10:03 CEST | Original file | - |
| article xml uploaded. | 1 June 2017 10:02 CEST | Original file | https://new.mdpi.com/2227-7080/5/2/27/xml |
| article pdf uploaded. | 1 June 2017 10:02 CEST | Updated version of record | https://new.mdpi.com/2227-7080/5/2/27/pdf |
| article pdf uploaded. | 29 May 2017 09:48 CEST | Version of Record | https://new.mdpi.com/2227-7080/5/2/27/pdf-vor |
