| article html file updated | 9 February 2020 02:34 CET | Update | https://www.mdpi.com/1996-1073/11/1/164 |
| article html file updated | 29 September 2019 19:20 CEST | Update | - |
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| article xml uploaded. | 10 January 2018 14:48 CET | Update | https://www.mdpi.com/1996-1073/11/1/164/xml |
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| article pdf uploaded. | 10 January 2018 14:47 CET | Version of Record | https://www.mdpi.com/1996-1073/11/1/164/pdf |