| article html file updated | 8 February 2020 17:21 CET | Update | https://www.mdpi.com/2227-9032/5/4/66 |
| article html file updated | 27 September 2019 10:20 CEST | Update | - |
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| article html file updated | 29 September 2017 03:50 CEST | Original file | - |
| article xml uploaded. | 29 September 2017 03:49 CEST | Original file | https://www.mdpi.com/2227-9032/5/4/66/xml |
| article pdf uploaded. | 29 September 2017 03:49 CEST | Version of Record | https://www.mdpi.com/2227-9032/5/4/66/pdf |
