| article html file updated | 8 February 2020 04:25 CET | Update | https://www.mdpi.com/2304-8158/6/5/32 |
| article html file updated | 24 September 2019 12:26 CEST | Update | - |
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| article xml uploaded. | 2 May 2017 05:39 CEST | Update | https://www.mdpi.com/2304-8158/6/5/32/xml |
| article pdf uploaded. | 2 May 2017 05:39 CEST | Updated version of record | https://www.mdpi.com/2304-8158/6/5/32/pdf |
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