| article html file updated | 8 February 2020 08:32 CET | Update | https://www.mdpi.com/2076-3425/7/6/68 |
| article html file updated | 3 May 2019 17:00 CEST | Update | - |
| article html file updated | 27 June 2017 09:54 CEST | Update | - |
| article html file updated | 16 June 2017 14:38 CEST | Original file | - |
| article xml uploaded. | 16 June 2017 14:36 CEST | Original file | https://www.mdpi.com/2076-3425/7/6/68/xml |
| article pdf uploaded. | 16 June 2017 14:36 CEST | Version of Record | https://www.mdpi.com/2076-3425/7/6/68/pdf |
