| article html file updated | 9 February 2020 05:03 CET | Update | https://www.mdpi.com/1422-0067/19/2/423 |
| article html file updated | 30 September 2019 09:43 CEST | Update | - |
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| article html file updated | 14 March 2018 18:25 CET | Update | - |
| article html file updated | 31 January 2018 16:12 CET | Original file | - |
| article xml uploaded. | 31 January 2018 16:10 CET | Original file | https://www.mdpi.com/1422-0067/19/2/423/xml |
| article pdf uploaded. | 31 January 2018 16:10 CET | Version of Record | https://www.mdpi.com/1422-0067/19/2/423/pdf |
