| article html file updated | 5 February 2020 23:03 CET | Update | https://www.mdpi.com/1999-4907/3/4/1071 |
| article html file updated | 8 May 2019 12:02 CEST | Update | N/A |
| article html file updated | 20 March 2019 15:06 CET | Update | N/A |
| article html file updated | 17 June 2015 04:08 CEST | Update | N/A |
| article html file updated | 10 November 2014 07:32 CET | Original file | N/A |
| article xml file uploaded | 10 November 2014 07:32 CET | Original file | https://www.mdpi.com/1999-4907/3/4/1071/xml |
