| article html file updated | 6 February 2020 20:04 CET | Update | https://www.mdpi.com/1424-8220/15/7/15090 | 
| article html file updated | 6 May 2019 16:59 CEST | Update | - | 
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| article html file updated | 21 August 2015 14:08 CEST | Update | - | 
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| article xml file uploaded | 21 August 2015 04:51 CEST | Original file | https://www.mdpi.com/1424-8220/15/7/15090/xml | 
| article pdf uploaded. | 26 June 2015 17:14 CEST | Updated version of record | https://www.mdpi.com/1424-8220/15/7/15090/pdf | 
| article pdf uploaded. | 26 June 2015 09:22 CEST | Version of Record | https://www.mdpi.com/1424-8220/15/7/15090/pdf-vor |