| article html file updated | 7 February 2020 19:20 CET | Update | https://www.mdpi.com/2306-5338/3/4/43 |
| article html file updated | 22 September 2019 09:59 CEST | Update | - |
| article html file updated | 4 May 2019 19:49 CEST | Update | - |
| article html file updated | 9 December 2016 10:55 CET | Original file | - |
| article xml uploaded. | 9 December 2016 10:53 CET | Original file | https://www.mdpi.com/2306-5338/3/4/43/xml |
| article pdf uploaded. | 9 December 2016 10:53 CET | Version of Record | https://www.mdpi.com/2306-5338/3/4/43/pdf |
