| article html file updated | 8 February 2020 02:12 CET | Update | https://www.mdpi.com/2073-4433/8/4/66 |
| article html file updated | 23 September 2019 23:59 CEST | Update | - |
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| article html file updated | 24 March 2017 12:12 CET | Original file | - |
| article xml uploaded. | 24 March 2017 12:10 CET | Original file | https://www.mdpi.com/2073-4433/8/4/66/xml |
| article pdf uploaded. | 24 March 2017 12:10 CET | Version of Record | https://www.mdpi.com/2073-4433/8/4/66/pdf |
