| article html file updated | 6 February 2020 03:52 CET | Update | https://www.mdpi.com/2079-9276/2/3/231 |
| article html file updated | 21 March 2019 03:12 CET | Update | N/A |
| article html file updated | 17 June 2015 12:27 CEST | Update | N/A |
| article html file updated | 14 August 2014 12:07 CEST | Original file | N/A |
| article xml file uploaded | 14 August 2014 12:07 CEST | Original file | https://www.mdpi.com/2079-9276/2/3/231/xml |
| article pdf uploaded. | 19 August 2013 14:08 CEST | Version of Record | https://www.mdpi.com/2079-9276/2/3/231/pdf |
