| article html file updated | 7 February 2020 02:38 CET | Update | https://www.mdpi.com/1422-0067/17/1/12 |
| article html file updated | 6 May 2019 04:08 CEST | Update | N/A |
| article html file updated | 26 March 2019 17:08 CET | Original file | N/A |
| article pdf uploaded. | 23 December 2015 12:55 CET | Version of Record | https://www.mdpi.com/1422-0067/17/1/12/pdf |
| article xml uploaded. | 23 December 2015 12:55 CET | Original file | https://www.mdpi.com/1422-0067/17/1/12/xml |
