| article html file updated | 11 February 2020 16:42 CET | Update | https://www.mdpi.com/2076-3417/9/4/688 | 
| article html file updated | 15 October 2019 03:48 CEST | Update | - | 
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| article pdf uploaded. | 25 February 2019 02:46 CET | Updated version of record | https://www.mdpi.com/2076-3417/9/4/688/pdf | 
| article xml uploaded. | 25 February 2019 02:46 CET | Update | https://www.mdpi.com/2076-3417/9/4/688/xml | 
| article xml file uploaded | 25 February 2019 02:46 CET | Update | - | 
| article html file updated | 18 February 2019 10:55 CET | Original file | - | 
| article pdf uploaded. | 18 February 2019 10:53 CET | Updated version of record | https://www.mdpi.com/2076-3417/9/4/688/pdf-vor | 
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| article pdf uploaded. | 17 February 2019 11:57 CET | Version of Record | https://www.mdpi.com/2076-3417/9/4/688/pdf-vor |