| article html file updated | 9 February 2020 06:19 CET | Update | https://www.mdpi.com/1422-0067/19/2/546 |
| article html file updated | 30 September 2019 17:31 CEST | Update | - |
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| article html file updated | 14 March 2018 19:13 CET | Update | - |
| article html file updated | 11 February 2018 12:35 CET | Original file | - |
| article xml uploaded. | 11 February 2018 12:33 CET | Original file | https://www.mdpi.com/1422-0067/19/2/546/xml |
| article pdf uploaded. | 11 February 2018 12:33 CET | Version of Record | https://www.mdpi.com/1422-0067/19/2/546/pdf |
