| article html file updated | 8 February 2020 21:59 CET | Update | https://www.mdpi.com/2079-4991/7/12/412 | 
| article html file updated | 28 September 2019 16:38 CEST | Update | - | 
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| article html file updated | 2 January 2018 15:09 CET | Update | - | 
| article html file updated | 24 November 2017 07:05 CET | Original file | - | 
| article xml uploaded. | 24 November 2017 07:03 CET | Update | https://www.mdpi.com/2079-4991/7/12/412/xml | 
| article xml uploaded. | 24 November 2017 07:03 CET | Original file | - | 
| article pdf uploaded. | 24 November 2017 07:03 CET | Updated version of record | https://www.mdpi.com/2079-4991/7/12/412/pdf | 
| article pdf uploaded. | 23 November 2017 10:17 CET | Version of Record | https://www.mdpi.com/2079-4991/7/12/412/pdf-vor |