| article html file updated | 7 February 2020 02:34 CET | Update | https://www.mdpi.com/1422-0067/17/1/7 |
| article html file updated | 6 May 2019 04:16 CEST | Update | - |
| article html file updated | 26 March 2019 17:02 CET | Original file | - |
| article pdf uploaded. | 22 December 2015 15:51 CET | Updated version of record | https://www.mdpi.com/1422-0067/17/1/7/pdf |
| article pdf uploaded. | 22 December 2015 14:36 CET | Version of Record | - |
| article xml uploaded. | 22 December 2015 14:36 CET | Original file | https://www.mdpi.com/1422-0067/17/1/7/xml |
