| article html file updated | 9 February 2020 10:56 CET | Update | https://www.mdpi.com/2076-3263/8/4/108 |
| article html file updated | 1 October 2019 21:31 CEST | Update | - |
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| article xml uploaded. | 23 March 2018 07:47 CET | Original file | https://www.mdpi.com/2076-3263/8/4/108/xml |
| article pdf uploaded. | 23 March 2018 07:47 CET | Version of Record | https://www.mdpi.com/2076-3263/8/4/108/pdf |