| article html file updated | 11 February 2020 17:30 CET | Update | https://www.mdpi.com/2079-9276/8/1/40 |
| article html file updated | 15 October 2019 08:43 CEST | Update | - |
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| article html file updated | 20 February 2019 16:02 CET | Original file | - |
| article xml uploaded. | 20 February 2019 15:59 CET | Original file | https://www.mdpi.com/2079-9276/8/1/40/xml |
| article pdf uploaded. | 20 February 2019 15:59 CET | Version of Record | https://www.mdpi.com/2079-9276/8/1/40/pdf |
