| article html file updated | 7 February 2020 20:30 CET | Update | https://www.mdpi.com/1422-0067/18/1/59 |
| article html file updated | 22 September 2019 16:21 CEST | Update | - |
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| article xml uploaded. | 29 December 2016 11:51 CET | Original file | https://www.mdpi.com/1422-0067/18/1/59/xml |
| article pdf uploaded. | 29 December 2016 11:51 CET | Version of Record | https://www.mdpi.com/1422-0067/18/1/59/pdf |
