| article html file updated | 7 February 2020 07:21 CET | Update | https://www.mdpi.com/1420-3049/21/4/499 |
| article html file updated | 21 September 2019 15:18 CEST | Update | - |
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| article html file updated | 15 April 2016 13:31 CEST | Original file | - |
| article xml uploaded. | 15 April 2016 13:30 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/499/xml |
| article pdf uploaded. | 15 April 2016 13:30 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/499/pdf |
