| article html file updated | 7 February 2020 10:35 CET | Update | https://www.mdpi.com/2073-4360/8/6/240 |
| article html file updated | 21 September 2019 19:35 CEST | Update | - |
| article html file updated | 5 May 2019 12:09 CEST | Update | - |
| article html file updated | 27 March 2019 08:13 CET | Update | - |
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| article html file updated | 29 June 2016 11:43 CEST | Update | - |
| article html file updated | 22 June 2016 11:43 CEST | Original file | - |
| article xml uploaded. | 22 June 2016 11:41 CEST | Original file | https://www.mdpi.com/2073-4360/8/6/240/xml |
| article pdf uploaded. | 22 June 2016 11:41 CEST | Version of Record | https://www.mdpi.com/2073-4360/8/6/240/pdf |
