| article html file updated | 9 February 2020 11:42 CET | Update | https://www.mdpi.com/2227-9067/5/4/46 |
| article html file updated | 2 October 2019 01:57 CEST | Update | - |
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| article xml uploaded. | 29 March 2018 09:18 CEST | Original file | https://www.mdpi.com/2227-9067/5/4/46/xml |
| article pdf uploaded. | 29 March 2018 09:18 CEST | Version of Record | https://www.mdpi.com/2227-9067/5/4/46/pdf |