| article html file updated | 7 February 2020 06:17 CET | Update | https://www.mdpi.com/2078-2489/7/2/19 |
| article html file updated | 21 September 2019 13:46 CEST | Update | N/A |
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| article xml uploaded. | 23 March 2016 12:04 CET | Original file | https://www.mdpi.com/2078-2489/7/2/19/xml |
| article pdf uploaded. | 23 March 2016 12:04 CET | Version of Record | https://www.mdpi.com/2078-2489/7/2/19/pdf |
