| article html file updated | 26 September 2022 09:11 CEST | Original file | https://www.mdpi.com/2504-3900/2/6/284 |
| article pdf uploaded. | 23 March 2018 05:08 CET | Updated version of record | https://www.mdpi.com/2504-3900/2/6/284/pdf |
| article pdf uploaded. | 23 February 2018 08:55 CET | Version of Record | https://www.mdpi.com/2504-3900/2/6/284/pdf-vor |
