| article html file updated | 11 February 2020 17:50 CET | Update | https://www.mdpi.com/2218-273X/9/2/76 | 
| article html file updated | 26 April 2019 12:59 CEST | Update | - | 
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| article html file updated | 21 February 2019 18:05 CET | Original file | - | 
| article pdf uploaded. | 21 February 2019 18:04 CET | Version of Record | https://www.mdpi.com/2218-273X/9/2/76/pdf | 
| article xml uploaded. | 21 February 2019 18:04 CET | Update | https://www.mdpi.com/2218-273X/9/2/76/xml | 
| article xml file uploaded | 21 February 2019 18:04 CET | Original file | - |