| article html file updated | 26 September 2022 09:34 CEST | Original file | https://www.mdpi.com/2504-3900/2/6/248 |
| article pdf uploaded. | 23 March 2018 05:00 CET | Updated version of record | https://www.mdpi.com/2504-3900/2/6/248/pdf |
| article pdf uploaded. | 24 February 2018 10:19 CET | Version of Record | https://www.mdpi.com/2504-3900/2/6/248/pdf-vor |
