| article html file updated | 7 February 2020 17:30 CET | Update | https://www.mdpi.com/2409-9287/1/3/220 |
| article html file updated | 4 May 2019 23:30 CEST | Update | N/A |
| article html file updated | 4 November 2016 08:43 CET | Original file | N/A |
| article xml uploaded. | 4 November 2016 08:42 CET | Original file | https://www.mdpi.com/2409-9287/1/3/220/xml |
| article pdf uploaded. | 4 November 2016 08:42 CET | Version of Record | https://www.mdpi.com/2409-9287/1/3/220/pdf |
