| article html file updated | 8 February 2020 07:46 CET | Update | https://www.mdpi.com/2227-7080/5/2/32 |
| article html file updated | 25 September 2019 05:47 CEST | Update | - |
| article html file updated | 3 May 2019 18:25 CEST | Update | - |
| article html file updated | 29 June 2017 11:57 CEST | Update | - |
| article html file updated | 9 June 2017 02:30 CEST | Original file | - |
| article xml uploaded. | 9 June 2017 02:29 CEST | Update | https://www.mdpi.com/2227-7080/5/2/32/xml |
| article pdf uploaded. | 9 June 2017 02:29 CEST | Updated version of record | https://www.mdpi.com/2227-7080/5/2/32/pdf |
| article pdf uploaded. | 8 June 2017 11:40 CEST | Version of Record | https://www.mdpi.com/2227-7080/5/2/32/pdf-vor |
