| article html file updated | 6 February 2020 06:33 CET | Update | https://www.mdpi.com/1422-0067/15/1/504 |
| article html file updated | 7 May 2019 20:10 CEST | Update | N/A |
| article html file updated | 21 March 2019 10:32 CET | Update | N/A |
| article html file updated | 19 August 2015 16:29 CEST | Update | N/A |
| article html file updated | 3 February 2014 10:39 CET | Original file | N/A |
| article xml file uploaded | 3 February 2014 10:39 CET | Original file | https://www.mdpi.com/1422-0067/15/1/504/xml |
| article pdf uploaded. | 3 January 2014 13:24 CET | Version of Record | https://www.mdpi.com/1422-0067/15/1/504/pdf |
