| article html file updated | 26 September 2022 13:56 CEST | Original file | https://www.mdpi.com/2504-3900/2/1/43 |
| article pdf uploaded. | 24 February 2018 02:15 CET | Updated version of record | https://www.mdpi.com/2504-3900/2/1/43/pdf |
| article pdf uploaded. | 4 January 2018 07:37 CET | Version of Record | https://www.mdpi.com/2504-3900/2/1/43/pdf-vor |
