| article html file updated | 7 February 2020 18:20 CET | Update | https://www.mdpi.com/2306-5338/3/4/41 |
| article html file updated | 4 May 2019 21:53 CEST | Update | N/A |
| article html file updated | 21 November 2016 10:35 CET | Original file | N/A |
| article xml uploaded. | 21 November 2016 10:34 CET | Original file | https://www.mdpi.com/2306-5338/3/4/41/xml |
| article pdf uploaded. | 21 November 2016 10:34 CET | Version of Record | https://www.mdpi.com/2306-5338/3/4/41/pdf |
