| article html file updated | 6 February 2020 18:36 CET | Update | https://www.mdpi.com/2227-7072/3/2/151 |
| article html file updated | 6 May 2019 20:05 CEST | Update | N/A |
| article html file updated | 26 March 2019 02:34 CET | Update | N/A |
| article html file updated | 10 October 2015 06:31 CEST | Update | N/A |
| article xml file uploaded | 10 October 2015 06:31 CEST | Original file | https://www.mdpi.com/2227-7072/3/2/151/xml |
| article html file updated | 21 August 2015 12:07 CEST | Original file | N/A |
| article pdf uploaded. | 13 May 2015 17:21 CEST | Version of Record | https://www.mdpi.com/2227-7072/3/2/151/pdf |
