| article html file updated | 8 February 2020 00:07 CET | Update | https://www.mdpi.com/2073-4441/9/3/91 |
| article html file updated | 23 September 2019 12:04 CEST | Update | - |
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| article html file updated | 28 March 2017 03:13 CEST | Update | - |
| article html file updated | 23 February 2017 14:38 CET | Original file | - |
| article xml uploaded. | 23 February 2017 14:37 CET | Original file | https://www.mdpi.com/2073-4441/9/3/91/xml |
| article pdf uploaded. | 23 February 2017 14:37 CET | Version of Record | https://www.mdpi.com/2073-4441/9/3/91/pdf |
