| article html file updated | 8 February 2020 19:36 CET | Update | https://www.mdpi.com/2079-6382/6/4/22 |
| article html file updated | 28 September 2019 01:13 CEST | Update | - |
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| article xml uploaded. | 30 October 2017 03:52 CET | Original file | https://www.mdpi.com/2079-6382/6/4/22/xml |
| article pdf uploaded. | 30 October 2017 03:52 CET | Updated version of record | https://www.mdpi.com/2079-6382/6/4/22/pdf |
| article pdf uploaded. | 27 October 2017 11:07 CEST | Version of Record | https://www.mdpi.com/2079-6382/6/4/22/pdf-vor |