| article html file updated | 8 February 2020 08:29 CET | Update | https://www.mdpi.com/2311-7524/3/2/40 |
| article html file updated | 3 May 2019 17:06 CEST | Update | - |
| article html file updated | 16 June 2017 15:01 CEST | Original file | - |
| article xml uploaded. | 16 June 2017 15:00 CEST | Original file | https://www.mdpi.com/2311-7524/3/2/40/xml |
| article pdf uploaded. | 16 June 2017 15:00 CEST | Version of Record | https://www.mdpi.com/2311-7524/3/2/40/pdf |
