| article html file updated | 7 February 2020 11:55 CET | Update | https://www.mdpi.com/2076-0760/5/3/31 |
| article html file updated | 5 May 2019 09:45 CEST | Update | - |
| article html file updated | 27 March 2019 10:43 CET | Update | - |
| article html file updated | 19 July 2016 11:45 CEST | Original file | - |
| article xml uploaded. | 19 July 2016 11:44 CEST | Original file | https://www.mdpi.com/2076-0760/5/3/31/xml |
| article pdf uploaded. | 19 July 2016 11:44 CEST | Version of Record | https://www.mdpi.com/2076-0760/5/3/31/pdf |
