| article html file updated | 8 February 2020 09:01 CET | Update | https://www.mdpi.com/2072-6643/9/7/644 | 
| article html file updated | 25 September 2019 12:15 CEST | Update | - | 
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| article xml uploaded. | 22 June 2017 13:59 CEST | Original file | https://www.mdpi.com/2072-6643/9/7/644/xml | 
| article pdf uploaded. | 22 June 2017 13:59 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/7/644/pdf |