| article html file updated | 9 February 2020 02:04 CET | Update | https://www.mdpi.com/2075-4701/8/1/33 |
| article html file updated | 29 September 2019 16:38 CEST | Update | N/A |
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| article html file updated | 5 January 2018 09:12 CET | Original file | N/A |
| article xml uploaded. | 5 January 2018 09:11 CET | Update | https://www.mdpi.com/2075-4701/8/1/33/xml |
| article pdf uploaded. | 5 January 2018 09:11 CET | Version of Record | https://www.mdpi.com/2075-4701/8/1/33/pdf |
