| article html file updated | 6 February 2020 02:09 CET | Update | https://www.mdpi.com/2075-4442/1/2/48 |
| article html file updated | 8 May 2019 05:04 CEST | Update | N/A |
| article html file updated | 20 March 2019 22:39 CET | Update | N/A |
| article html file updated | 17 June 2015 09:25 CEST | Update | N/A |
| article html file updated | 14 November 2014 11:01 CET | Original file | N/A |
| article xml file uploaded | 14 November 2014 11:01 CET | Original file | https://www.mdpi.com/2075-4442/1/2/48/xml |
| article pdf uploaded. | 17 May 2013 16:28 CEST | Version of Record | https://www.mdpi.com/2075-4442/1/2/48/pdf |
