| article html file updated | 8 February 2020 03:42 CET | Update | https://www.mdpi.com/1996-1073/10/4/538 |
| article html file updated | 24 September 2019 08:23 CEST | Update | - |
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| article html file updated | 28 April 2017 06:21 CEST | Update | - |
| article html file updated | 16 April 2017 09:33 CEST | Original file | - |
| article xml uploaded. | 16 April 2017 09:32 CEST | Update | https://www.mdpi.com/1996-1073/10/4/538/xml |
| article pdf uploaded. | 16 April 2017 09:32 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/538/pdf |
