| article html file updated | 7 February 2020 07:10 CET | Update | https://www.mdpi.com/1420-3049/21/4/480 |
| article html file updated | 21 September 2019 15:00 CEST | Update | - |
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| article html file updated | 28 April 2016 11:51 CEST | Update | - |
| article html file updated | 12 April 2016 13:10 CEST | Original file | - |
| article xml uploaded. | 12 April 2016 13:09 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/480/xml |
| article pdf uploaded. | 12 April 2016 13:09 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/480/pdf |
