| article html file updated | 8 February 2020 05:48 CET | Update | https://www.mdpi.com/2073-4360/9/5/172 |
| article html file updated | 24 September 2019 19:36 CEST | Update | - |
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| article html file updated | 31 May 2017 10:20 CEST | Update | - |
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| article html file updated | 13 May 2017 11:15 CEST | Original file | - |
| article xml uploaded. | 13 May 2017 11:13 CEST | Original file | https://www.mdpi.com/2073-4360/9/5/172/xml |
| article pdf uploaded. | 13 May 2017 11:13 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/5/172/pdf |
