| article html file updated | 7 February 2020 02:06 CET | Update | https://www.mdpi.com/2076-393X/3/4/1004 |
| article html file updated | 6 May 2019 05:13 CEST | Update | - |
| article html file updated | 26 March 2019 16:17 CET | Original file | - |
| article pdf uploaded. | 11 December 2015 11:50 CET | Version of Record | https://www.mdpi.com/2076-393X/3/4/1004/pdf |
| article xml uploaded. | 11 December 2015 11:50 CET | Original file | https://www.mdpi.com/2076-393X/3/4/1004/xml |
