| article html file updated | 7 February 2020 22:02 CET | Update | https://www.mdpi.com/2076-3425/7/1/12 |
| article html file updated | 23 September 2019 00:30 CEST | Update | - |
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| article html file updated | 8 February 2017 12:26 CET | Update | - |
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| article xml uploaded. | 23 January 2017 09:03 CET | Original file | https://www.mdpi.com/2076-3425/7/1/12/xml |
| article pdf uploaded. | 23 January 2017 09:03 CET | Version of Record | https://www.mdpi.com/2076-3425/7/1/12/pdf |
