| article html file updated | 9 February 2020 02:03 CET | Update | https://www.mdpi.com/2075-4418/8/1/2 |
| article html file updated | 29 September 2019 16:32 CEST | Update | - |
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| article html file updated | 27 March 2018 14:31 CEST | Update | - |
| article html file updated | 5 January 2018 07:09 CET | Original file | - |
| article xml uploaded. | 5 January 2018 07:07 CET | Original file | https://www.mdpi.com/2075-4418/8/1/2/xml |
| article pdf uploaded. | 5 January 2018 07:07 CET | Version of Record | https://www.mdpi.com/2075-4418/8/1/2/pdf |
