| article html file updated | 9 February 2020 06:23 CET | Update | https://www.mdpi.com/1422-0067/19/2/549 |
| article html file updated | 30 September 2019 17:53 CEST | Update | - |
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| article html file updated | 12 February 2018 07:11 CET | Original file | - |
| article xml uploaded. | 12 February 2018 07:10 CET | Original file | https://www.mdpi.com/1422-0067/19/2/549/xml |
| article pdf uploaded. | 12 February 2018 07:10 CET | Version of Record | https://www.mdpi.com/1422-0067/19/2/549/pdf |
