| article html file updated | 7 February 2020 06:18 CET | Update | https://www.mdpi.com/2073-4360/8/4/84 |
| article html file updated | 21 September 2019 13:47 CEST | Update | - |
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| article html file updated | 15 March 2019 11:41 CET | Update | - |
| article html file updated | 29 April 2016 09:39 CEST | Original file | - |
| article xml uploaded. | 23 March 2016 11:50 CET | Original file | https://www.mdpi.com/2073-4360/8/4/84/xml |
| article pdf uploaded. | 23 March 2016 11:50 CET | Version of Record | https://www.mdpi.com/2073-4360/8/4/84/pdf |
