| article html file updated | 8 February 2020 12:05 CET | Update | https://www.mdpi.com/2076-0760/6/3/81 |
| article html file updated | 3 May 2019 09:57 CEST | Update | - |
| article html file updated | 27 March 2019 17:50 CET | Update | - |
| article html file updated | 27 July 2017 12:27 CEST | Original file | - |
| article xml uploaded. | 27 July 2017 12:26 CEST | Original file | https://www.mdpi.com/2076-0760/6/3/81/xml |
| article pdf uploaded. | 27 July 2017 12:26 CEST | Updated version of record | https://www.mdpi.com/2076-0760/6/3/81/pdf |
| article pdf uploaded. | 26 July 2017 15:42 CEST | Version of Record | https://www.mdpi.com/2076-0760/6/3/81/pdf-vor |
