| article html file updated | 7 February 2020 02:50 CET | Update | https://www.mdpi.com/1422-0067/17/1/46 |
| article html file updated | 6 May 2019 03:40 CEST | Update | - |
| article html file updated | 26 March 2019 17:27 CET | Original file | - |
| article pdf uploaded. | 29 December 2015 12:13 CET | Version of Record | https://www.mdpi.com/1422-0067/17/1/46/pdf |
| article xml uploaded. | 29 December 2015 12:13 CET | Original file | https://www.mdpi.com/1422-0067/17/1/46/xml |
