| article html file updated | 7 February 2020 09:58 CET | Update | https://www.mdpi.com/2073-4360/8/6/227 |
| article html file updated | 21 September 2019 18:46 CEST | Update | - |
| article html file updated | 5 May 2019 13:19 CEST | Update | - |
| article html file updated | 27 March 2019 07:07 CET | Update | - |
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| article html file updated | 29 June 2016 11:39 CEST | Update | - |
| article html file updated | 9 June 2016 10:34 CEST | Original file | - |
| article xml uploaded. | 9 June 2016 10:33 CEST | Update | https://www.mdpi.com/2073-4360/8/6/227/xml |
| article pdf uploaded. | 9 June 2016 10:33 CEST | Version of Record | https://www.mdpi.com/2073-4360/8/6/227/pdf |
