| article html file updated | 9 February 2020 02:18 CET | Update | https://www.mdpi.com/2226-4787/6/1/5 |
| article html file updated | 29 September 2019 17:54 CEST | Update | - |
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| article xml uploaded. | 8 January 2018 08:27 CET | Original file | https://www.mdpi.com/2226-4787/6/1/5/xml |
| article pdf uploaded. | 8 January 2018 08:27 CET | Version of Record | https://www.mdpi.com/2226-4787/6/1/5/pdf |
