| article html file updated | 8 February 2020 07:19 CET | Update | https://www.mdpi.com/2073-4441/9/6/398 |
| article html file updated | 25 September 2019 03:22 CEST | Update | - |
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| article html file updated | 29 June 2017 12:12 CEST | Update | - |
| article html file updated | 2 June 2017 13:54 CEST | Original file | - |
| article xml uploaded. | 2 June 2017 13:53 CEST | Original file | https://www.mdpi.com/2073-4441/9/6/398/xml |
| article pdf uploaded. | 2 June 2017 13:53 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/6/398/pdf |
