| article html file updated | 7 February 2020 08:41 CET | Update | https://www.mdpi.com/1422-0067/17/5/721 |
| article html file updated | 5 May 2019 15:50 CEST | Update | - |
| article html file updated | 27 March 2019 04:40 CET | Update | - |
| article html file updated | 26 May 2016 12:08 CEST | Update | - |
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| article xml uploaded. | 13 May 2016 12:42 CEST | Original file | https://www.mdpi.com/1422-0067/17/5/721/xml |
| article pdf uploaded. | 13 May 2016 12:42 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/5/721/pdf |
