| article html file updated | 26 September 2022 15:11 CEST | Original file | https://www.mdpi.com/2504-3900/2/1/49 |
| article pdf uploaded. | 9 February 2018 12:30 CET | Updated version of record | https://www.mdpi.com/2504-3900/2/1/49/pdf |
| article pdf uploaded. | 12 January 2018 14:42 CET | Version of Record | https://www.mdpi.com/2504-3900/2/1/49/pdf-vor |
