| article html file updated | 8 February 2020 22:36 CET | Update | https://www.mdpi.com/2079-9292/6/4/105 |
| article html file updated | 28 September 2019 20:25 CEST | Update | - |
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| article html file updated | 29 November 2017 13:11 CET | Original file | - |
| article xml uploaded. | 29 November 2017 13:09 CET | Original file | https://www.mdpi.com/2079-9292/6/4/105/xml |
| article pdf uploaded. | 29 November 2017 13:09 CET | Version of Record | https://www.mdpi.com/2079-9292/6/4/105/pdf |
