| article html file updated | 8 February 2020 01:58 CET | Update | https://www.mdpi.com/2073-8994/9/3/46 |
| article html file updated | 23 September 2019 22:49 CEST | Update | - |
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| article html file updated | 23 March 2017 07:34 CET | Original file | - |
| article xml uploaded. | 23 March 2017 07:33 CET | Original file | https://www.mdpi.com/2073-8994/9/3/46/xml |
| article pdf uploaded. | 23 March 2017 07:33 CET | Updated version of record | https://www.mdpi.com/2073-8994/9/3/46/pdf |
| article pdf uploaded. | 22 March 2017 16:13 CET | Version of Record | https://www.mdpi.com/2073-8994/9/3/46/pdf-vor |