| article html file updated | 9 February 2020 01:57 CET | Update | https://www.mdpi.com/1422-0067/19/1/139 |
| article html file updated | 29 September 2019 16:01 CEST | Update | - |
| article html file updated | 2 May 2019 04:31 CEST | Update | - |
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| article html file updated | 2 February 2018 09:43 CET | Update | - |
| article html file updated | 4 January 2018 07:28 CET | Original file | - |
| article xml uploaded. | 4 January 2018 07:26 CET | Original file | https://www.mdpi.com/1422-0067/19/1/139/xml |
| article pdf uploaded. | 4 January 2018 07:26 CET | Version of Record | https://www.mdpi.com/1422-0067/19/1/139/pdf |
