| article html file updated | 9 February 2020 03:50 CET | Update | https://www.mdpi.com/2312-7481/4/1/12 |
| article html file updated | 30 September 2019 02:40 CEST | Update | N/A |
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| article xml uploaded. | 23 January 2018 13:26 CET | Update | https://www.mdpi.com/2312-7481/4/1/12/xml |
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| article xml uploaded. | 22 January 2018 04:59 CET | Original file | N/A |
| article pdf uploaded. | 22 January 2018 04:59 CET | Version of Record | https://www.mdpi.com/2312-7481/4/1/12/pdf |