| article html file updated | 9 February 2020 02:41 CET | Update | https://www.mdpi.com/1422-0067/19/1/220 |
| article html file updated | 29 September 2019 19:56 CEST | Update | - |
| article html file updated | 2 May 2019 03:01 CEST | Update | - |
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| article html file updated | 2 February 2018 10:00 CET | Update | - |
| article html file updated | 11 January 2018 16:52 CET | Original file | - |
| article xml uploaded. | 11 January 2018 16:51 CET | Original file | https://www.mdpi.com/1422-0067/19/1/220/xml |
| article pdf uploaded. | 11 January 2018 16:51 CET | Version of Record | https://www.mdpi.com/1422-0067/19/1/220/pdf |
