| article html file updated | 8 February 2020 21:44 CET | Update | https://www.mdpi.com/2312-7481/3/4/36 |
| article html file updated | 28 September 2019 15:05 CEST | Update | - |
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| article xml uploaded. | 21 November 2017 05:02 CET | Original file | https://www.mdpi.com/2312-7481/3/4/36/xml |
| article pdf uploaded. | 21 November 2017 05:02 CET | Version of Record | https://www.mdpi.com/2312-7481/3/4/36/pdf |
