| article html file updated | 7 February 2020 17:24 CET | Update | https://www.mdpi.com/2076-0760/5/4/72 |
| article html file updated | 4 May 2019 23:42 CEST | Update | N/A |
| article html file updated | 2 November 2016 12:41 CET | Original file | N/A |
| article xml uploaded. | 2 November 2016 12:39 CET | Original file | https://www.mdpi.com/2076-0760/5/4/72/xml |
| article pdf uploaded. | 2 November 2016 12:39 CET | Version of Record | https://www.mdpi.com/2076-0760/5/4/72/pdf |
