| article html file updated | 8 February 2020 04:15 CET | Update | https://new.mdpi.com/2304-6775/5/2/9 |
| article html file updated | 24 September 2019 11:33 CEST | Update | - |
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| article html file updated | 29 June 2017 12:21 CEST | Update | - |
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| article xml uploaded. | 24 April 2017 08:20 CEST | Original file | https://new.mdpi.com/2304-6775/5/2/9/xml |
| article pdf uploaded. | 24 April 2017 08:20 CEST | Version of Record | https://new.mdpi.com/2304-6775/5/2/9/pdf |
