| article html file updated | 7 February 2020 15:29 CET | Update | https://www.mdpi.com/2076-0760/5/4/52 |
| article html file updated | 5 May 2019 03:12 CEST | Update | N/A |
| article html file updated | 23 September 2016 14:18 CEST | Original file | N/A |
| article xml uploaded. | 23 September 2016 14:17 CEST | Original file | https://www.mdpi.com/2076-0760/5/4/52/xml |
| article pdf uploaded. | 23 September 2016 14:17 CEST | Version of Record | https://www.mdpi.com/2076-0760/5/4/52/pdf |
