| article html file updated | 9 February 2020 13:28 CET | Update | https://www.mdpi.com/2075-4701/8/4/262 | 
| article html file updated | 2 October 2019 12:43 CEST | Update | - | 
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| article html file updated | 12 April 2018 05:26 CEST | Original file | - | 
| article xml uploaded. | 12 April 2018 05:25 CEST | Update | https://www.mdpi.com/2075-4701/8/4/262/xml | 
| article pdf uploaded. | 12 April 2018 05:25 CEST | Version of Record | https://www.mdpi.com/2075-4701/8/4/262/pdf |