| article html file updated | 7 February 2020 09:44 CET | Update | https://www.mdpi.com/2073-4360/8/6/217 |
| article html file updated | 21 September 2019 18:26 CEST | Update | - |
| article html file updated | 5 May 2019 13:46 CEST | Update | - |
| article html file updated | 27 March 2019 06:39 CET | Update | - |
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| article html file updated | 29 June 2016 11:29 CEST | Update | - |
| article html file updated | 3 June 2016 11:20 CEST | Original file | - |
| article xml uploaded. | 3 June 2016 11:18 CEST | Original file | https://www.mdpi.com/2073-4360/8/6/217/xml |
| article pdf uploaded. | 3 June 2016 11:18 CEST | Version of Record | https://www.mdpi.com/2073-4360/8/6/217/pdf |
