| article html file updated | 8 February 2020 23:57 CET | Update | https://www.mdpi.com/1996-1073/10/12/2117 |
| article html file updated | 29 September 2019 04:26 CEST | Update | N/A |
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| article html file updated | 13 December 2017 10:47 CET | Original file | N/A |
| article xml uploaded. | 13 December 2017 10:46 CET | Original file | https://www.mdpi.com/1996-1073/10/12/2117/xml |
| article pdf uploaded. | 13 December 2017 10:46 CET | Version of Record | https://www.mdpi.com/1996-1073/10/12/2117/pdf |
