| article html file updated | 9 February 2020 03:48 CET | Update | https://www.mdpi.com/2075-1680/7/1/6 |
| article html file updated | 30 September 2019 02:26 CEST | Update | - |
| article html file updated | 2 May 2019 00:43 CEST | Update | - |
| article html file updated | 17 April 2019 23:08 CEST | Update | - |
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| article html file updated | 26 March 2018 15:31 CEST | Update | - |
| article html file updated | 20 January 2018 11:44 CET | Original file | - |
| article xml uploaded. | 20 January 2018 11:43 CET | Original file | https://www.mdpi.com/2075-1680/7/1/6/xml |
| article pdf uploaded. | 20 January 2018 11:43 CET | Version of Record | https://www.mdpi.com/2075-1680/7/1/6/pdf |
