| article html file updated | 8 February 2020 10:12 CET | Update | https://www.mdpi.com/2071-1050/9/7/1176 | 
| article html file updated | 25 September 2019 18:40 CEST | Update | - | 
| article html file updated | 3 May 2019 13:51 CEST | Update | - | 
| article html file updated | 31 July 2017 09:47 CEST | Update | - | 
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| article xml uploaded. | 19 July 2017 08:38 CEST | Update | https://www.mdpi.com/2071-1050/9/7/1176/xml | 
| article pdf uploaded. | 19 July 2017 08:38 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/7/1176/pdf | 
| article html file updated | 5 July 2017 14:01 CEST | Original file | - | 
| article pdf uploaded. | 5 July 2017 14:00 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/7/1176/pdf-vor |