| article html file updated | 9 February 2020 10:52 CET | Update | https://www.mdpi.com/2076-3263/8/4/106 |
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| article xml uploaded. | 22 March 2018 16:53 CET | Original file | https://www.mdpi.com/2076-3263/8/4/106/xml |
| article pdf uploaded. | 22 March 2018 16:53 CET | Version of Record | https://www.mdpi.com/2076-3263/8/4/106/pdf |