| article html file updated | 7 February 2020 01:33 CET | Update | https://www.mdpi.com/2077-1312/3/4/1448 |
| article html file updated | 6 May 2019 06:22 CEST | Update | N/A |
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| article html file updated | 27 October 2017 11:26 CEST | Original file | N/A |
| article pdf uploaded. | 1 December 2015 12:01 CET | Version of Record | https://www.mdpi.com/2077-1312/3/4/1448/pdf |
| article xml uploaded. | 1 December 2015 12:01 CET | Original file | https://www.mdpi.com/2077-1312/3/4/1448/xml |
