| article html file updated | 7 February 2020 22:15 CET | Update | https://www.mdpi.com/2075-4418/7/1/8 |
| article html file updated | 23 September 2019 01:40 CEST | Update | - |
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| article html file updated | 29 March 2017 10:38 CEST | Update | - |
| article html file updated | 26 January 2017 09:14 CET | Original file | - |
| article xml uploaded. | 26 January 2017 09:13 CET | Original file | https://www.mdpi.com/2075-4418/7/1/8/xml |
| article pdf uploaded. | 26 January 2017 09:13 CET | Version of Record | https://www.mdpi.com/2075-4418/7/1/8/pdf |
