| article html file updated | 6 February 2020 19:34 CET | Update | https://www.mdpi.com/2079-3197/3/2/299 |
| article html file updated | 6 May 2019 18:01 CEST | Update | N/A |
| article html file updated | 26 March 2019 04:32 CET | Update | N/A |
| article html file updated | 21 August 2015 13:27 CEST | Update | N/A |
| article html file updated | 9 July 2015 12:31 CEST | Original file | N/A |
| article xml file uploaded | 9 July 2015 12:31 CEST | Original file | https://www.mdpi.com/2079-3197/3/2/299/xml |
| article pdf uploaded. | 10 June 2015 13:00 CEST | Version of Record | https://www.mdpi.com/2079-3197/3/2/299/pdf |
