| article html file updated | 26 September 2022 10:58 CEST | Original file | https://www.mdpi.com/2504-3900/2/6/307 |
| article pdf uploaded. | 23 March 2018 05:17 CET | Updated version of record | https://www.mdpi.com/2504-3900/2/6/307/pdf |
| article pdf uploaded. | 22 February 2018 05:27 CET | Version of Record | https://www.mdpi.com/2504-3900/2/6/307/pdf-vor |
