| article html file updated | 7 February 2020 18:05 CET | Update | https://www.mdpi.com/2306-5338/3/4/37 |
| article html file updated | 4 May 2019 22:24 CEST | Update | - |
| article html file updated | 16 November 2016 12:47 CET | Original file | - |
| article xml uploaded. | 16 November 2016 12:45 CET | Update | https://www.mdpi.com/2306-5338/3/4/37/xml |
| article xml uploaded. | 16 November 2016 12:45 CET | Update | - |
| article xml uploaded. | 16 November 2016 12:45 CET | Original file | - |
| article pdf uploaded. | 16 November 2016 12:45 CET | Version of Record | https://www.mdpi.com/2306-5338/3/4/37/pdf |
