| article html file updated | 6 February 2020 20:49 CET | Update | https://www.mdpi.com/2227-7072/3/3/194 |
| article html file updated | 6 May 2019 15:28 CEST | Update | N/A |
| article html file updated | 26 March 2019 06:55 CET | Update | N/A |
| article html file updated | 15 October 2015 07:24 CEST | Update | N/A |
| article xml file uploaded | 15 October 2015 07:24 CEST | Original file | https://www.mdpi.com/2227-7072/3/3/194/xml |
| article html file updated | 21 August 2015 15:00 CEST | Original file | N/A |
| article pdf uploaded. | 17 July 2015 17:12 CEST | Version of Record | https://www.mdpi.com/2227-7072/3/3/194/pdf |
