| article html file updated | 8 February 2020 06:48 CET | Update | https://www.mdpi.com/2227-7080/5/2/26 |
| article html file updated | 25 September 2019 00:54 CEST | Update | - |
| article html file updated | 3 May 2019 20:13 CEST | Update | - |
| article html file updated | 29 June 2017 11:56 CEST | Update | - |
| article html file updated | 27 May 2017 05:18 CEST | Original file | - |
| article xml uploaded. | 27 May 2017 05:17 CEST | Original file | https://www.mdpi.com/2227-7080/5/2/26/xml |
| article pdf uploaded. | 27 May 2017 05:17 CEST | Version of Record | https://www.mdpi.com/2227-7080/5/2/26/pdf |
