| article html file updated | 8 February 2020 02:46 CET | Update | https://www.mdpi.com/2227-7080/5/2/13 |
| article html file updated | 24 September 2019 03:12 CEST | Update | - |
| article html file updated | 4 May 2019 03:54 CEST | Update | - |
| article html file updated | 29 June 2017 11:53 CEST | Update | - |
| article html file updated | 5 April 2017 10:58 CEST | Original file | - |
| article xml uploaded. | 5 April 2017 10:57 CEST | Original file | https://www.mdpi.com/2227-7080/5/2/13/xml |
| article pdf uploaded. | 5 April 2017 10:57 CEST | Updated version of record | https://www.mdpi.com/2227-7080/5/2/13/pdf |
| article pdf uploaded. | 1 April 2017 11:22 CEST | Version of Record | https://www.mdpi.com/2227-7080/5/2/13/pdf-vor |
