| article html file updated | 9 February 2020 15:27 CET | Update | https://www.mdpi.com/1996-1073/11/5/1070 | 
| article html file updated | 3 October 2019 00:27 CEST | Update | - | 
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| article html file updated | 26 April 2018 12:38 CEST | Original file | - | 
| article pdf uploaded. | 26 April 2018 12:36 CEST | Version of Record | https://www.mdpi.com/1996-1073/11/5/1070/pdf | 
| article xml uploaded. | 26 April 2018 12:36 CEST | Update | https://www.mdpi.com/1996-1073/11/5/1070/xml | 
| article xml file uploaded | 26 April 2018 12:36 CEST | Original file | - |