| article html file updated | 8 February 2020 02:40 CET | Update | https://www.mdpi.com/2227-7080/5/2/12 |
| article html file updated | 24 September 2019 02:38 CEST | Update | - |
| article html file updated | 4 May 2019 04:08 CEST | Update | - |
| article html file updated | 29 June 2017 11:53 CEST | Update | - |
| article html file updated | 31 March 2017 22:24 CEST | Original file | - |
| article xml uploaded. | 31 March 2017 15:46 CEST | Original file | https://www.mdpi.com/2227-7080/5/2/12/xml |
| article pdf uploaded. | 31 March 2017 15:46 CEST | Version of Record | https://www.mdpi.com/2227-7080/5/2/12/pdf |
