| article html file updated | 8 February 2020 04:52 CET | Update | https://www.mdpi.com/2075-1702/5/2/15 |
| article html file updated | 24 September 2019 14:48 CEST | Update | N/A |
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| article html file updated | 29 June 2017 11:35 CEST | Update | N/A |
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| article html file updated | 2 May 2017 14:02 CEST | Original file | N/A |
| article xml uploaded. | 2 May 2017 14:01 CEST | Original file | https://www.mdpi.com/2075-1702/5/2/15/xml |
| article pdf uploaded. | 2 May 2017 14:01 CEST | Version of Record | https://www.mdpi.com/2075-1702/5/2/15/pdf |
