| article html file updated | 6 February 2020 09:31 CET | Update | https://www.mdpi.com/2076-393X/2/2/397 |
| article html file updated | 7 May 2019 14:01 CEST | Update | - |
| article html file updated | 21 March 2019 17:42 CET | Update | - |
| article html file updated | 20 August 2015 08:21 CEST | Update | - |
| article html file updated | 14 January 2015 05:17 CET | Original file | - |
| article xml file uploaded | 14 January 2015 05:17 CET | Original file | https://www.mdpi.com/2076-393X/2/2/397/xml |
| article pdf uploaded. | 27 May 2014 08:51 CEST | Version of Record | https://www.mdpi.com/2076-393X/2/2/397/pdf |
