| article html file updated | 8 February 2020 08:30 CET | Update | https://www.mdpi.com/1996-1073/10/6/819 |
| article html file updated | 25 September 2019 09:35 CEST | Update | - |
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| article html file updated | 27 June 2017 10:22 CEST | Update | - |
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| article xml uploaded. | 16 June 2017 14:27 CEST | Original file | https://www.mdpi.com/1996-1073/10/6/819/xml |
| article pdf uploaded. | 16 June 2017 14:27 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/6/819/pdf |
