| article html file updated | 6 February 2020 06:21 CET | Update | https://www.mdpi.com/1422-0067/15/1/44 |
| article html file updated | 7 May 2019 20:35 CEST | Update | N/A |
| article html file updated | 21 March 2019 09:51 CET | Update | N/A |
| article html file updated | 19 August 2015 14:34 CEST | Update | N/A |
| article html file updated | 3 February 2014 10:31 CET | Original file | N/A |
| article xml file uploaded | 3 February 2014 10:30 CET | Original file | https://www.mdpi.com/1422-0067/15/1/44/xml |
| article pdf uploaded. | 20 December 2013 11:31 CET | Version of Record | https://www.mdpi.com/1422-0067/15/1/44/pdf |
