| article html file updated | 26 September 2022 14:37 CEST | Original file | https://www.mdpi.com/2504-3900/2/6/199 |
| article pdf uploaded. | 23 March 2018 04:21 CET | Updated version of record | https://www.mdpi.com/2504-3900/2/6/199/pdf |
| article pdf uploaded. | 14 February 2018 07:56 CET | Version of Record | https://www.mdpi.com/2504-3900/2/6/199/pdf-vor |
