| article html file updated | 9 February 2020 01:46 CET | Update | https://www.mdpi.com/2075-4701/8/1/28 |
| article html file updated | 2 May 2019 04:54 CEST | Update | N/A |
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| article pdf uploaded. | 23 January 2018 07:04 CET | Updated version of record | https://www.mdpi.com/2075-4701/8/1/28/pdf |
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| article xml uploaded. | 2 January 2018 11:39 CET | Original file | https://www.mdpi.com/2075-4701/8/1/28/xml |
