| article html file updated | 7 February 2020 20:04 CET | Update | https://www.mdpi.com/2073-4441/8/12/608 |
| article html file updated | 22 September 2019 13:57 CEST | Update | - |
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| article html file updated | 27 December 2016 11:53 CET | Update | - |
| article html file updated | 21 December 2016 12:35 CET | Original file | - |
| article xml uploaded. | 21 December 2016 12:33 CET | Original file | https://www.mdpi.com/2073-4441/8/12/608/xml |
| article pdf uploaded. | 21 December 2016 12:33 CET | Version of Record | https://www.mdpi.com/2073-4441/8/12/608/pdf |
