| article html file updated | 8 February 2020 01:38 CET | Update | https://www.mdpi.com/2076-0760/6/1/32 |
| article html file updated | 4 May 2019 06:21 CEST | Update | - |
| article html file updated | 16 March 2017 13:55 CET | Original file | - |
| article xml uploaded. | 16 March 2017 13:54 CET | Original file | https://www.mdpi.com/2076-0760/6/1/32/xml |
| article pdf uploaded. | 16 March 2017 13:54 CET | Version of Record | https://www.mdpi.com/2076-0760/6/1/32/pdf |
