| article html file updated | 6 February 2020 06:43 CET | Update | https://www.mdpi.com/1422-0067/15/1/994 |
| article html file updated | 7 May 2019 19:50 CEST | Update | N/A |
| article html file updated | 21 March 2019 10:59 CET | Update | N/A |
| article html file updated | 19 August 2015 17:17 CEST | Update | N/A |
| article html file updated | 3 February 2014 10:51 CET | Original file | N/A |
| article xml file uploaded | 3 February 2014 10:51 CET | Original file | https://www.mdpi.com/1422-0067/15/1/994/xml |
| article pdf uploaded. | 13 January 2014 11:30 CET | Version of Record | https://www.mdpi.com/1422-0067/15/1/994/pdf |
