| article html file updated | 8 February 2020 02:37 CET | Update | https://www.mdpi.com/2076-3263/7/2/20 |
| article html file updated | 24 September 2019 02:22 CEST | Update | - |
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| article html file updated | 25 July 2017 10:24 CEST | Update | - |
| article html file updated | 31 March 2017 07:44 CEST | Original file | - |
| article xml uploaded. | 31 March 2017 07:42 CEST | Original file | https://www.mdpi.com/2076-3263/7/2/20/xml |
| article pdf uploaded. | 31 March 2017 07:42 CEST | Version of Record | https://www.mdpi.com/2076-3263/7/2/20/pdf |
