| article html file updated | 9 February 2020 03:39 CET | Update | https://www.mdpi.com/1422-0067/19/1/304 |
| article html file updated | 30 September 2019 01:32 CEST | Update | - |
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| article html file updated | 2 February 2018 10:19 CET | Update | - |
| article html file updated | 19 January 2018 14:42 CET | Original file | - |
| article xml uploaded. | 19 January 2018 14:41 CET | Original file | https://www.mdpi.com/1422-0067/19/1/304/xml |
| article pdf uploaded. | 19 January 2018 14:41 CET | Version of Record | https://www.mdpi.com/1422-0067/19/1/304/pdf |
