| article html file updated | 7 February 2020 18:45 CET | Update | https://www.mdpi.com/2220-9964/5/12/223 |
| article html file updated | 22 September 2019 07:31 CEST | Update | - |
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| article html file updated | 28 December 2016 10:38 CET | Update | - |
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| article xml uploaded. | 29 November 2016 10:38 CET | Original file | https://www.mdpi.com/2220-9964/5/12/223/xml |
| article pdf uploaded. | 29 November 2016 10:38 CET | Version of Record | https://www.mdpi.com/2220-9964/5/12/223/pdf |
