| article html file updated | 7 February 2020 02:57 CET | Update | https://www.mdpi.com/1422-0067/17/1/56 |
| article html file updated | 6 May 2019 03:30 CEST | Update | - |
| article html file updated | 26 March 2019 17:36 CET | Original file | - |
| article pdf uploaded. | 31 December 2015 13:00 CET | Version of Record | https://www.mdpi.com/1422-0067/17/1/56/pdf |
| article xml uploaded. | 31 December 2015 13:00 CET | Original file | https://www.mdpi.com/1422-0067/17/1/56/xml |
