| article html file updated | 8 February 2020 02:27 CET | Update | https://www.mdpi.com/2072-6694/9/4/30 |
| article html file updated | 24 September 2019 01:22 CEST | Update | - |
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| article html file updated | 28 April 2017 05:34 CEST | Update | - |
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| article xml uploaded. | 29 March 2017 08:15 CEST | Original file | https://www.mdpi.com/2072-6694/9/4/30/xml |
| article pdf uploaded. | 29 March 2017 08:15 CEST | Version of Record | https://www.mdpi.com/2072-6694/9/4/30/pdf |
