| article html file updated | 8 February 2020 09:06 CET | Update | https://www.mdpi.com/2073-4360/9/7/242 | 
| article html file updated | 25 September 2019 12:43 CEST | Update | - | 
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| article xml uploaded. | 23 June 2017 12:14 CEST | Update | https://www.mdpi.com/2073-4360/9/7/242/xml | 
| article pdf uploaded. | 23 June 2017 12:14 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/7/242/pdf |