| article html file updated | 6 February 2020 06:26 CET | Update | https://www.mdpi.com/1422-0067/15/1/218 |
| article html file updated | 7 May 2019 20:24 CEST | Update | - |
| article html file updated | 21 March 2019 10:08 CET | Update | - |
| article html file updated | 19 August 2015 15:19 CEST | Update | - |
| article html file updated | 3 February 2014 10:34 CET | Original file | - |
| article xml file uploaded | 3 February 2014 10:33 CET | Original file | https://www.mdpi.com/1422-0067/15/1/218/xml |
| article pdf uploaded. | 27 December 2013 12:25 CET | Version of Record | https://www.mdpi.com/1422-0067/15/1/218/pdf |
