| article html file updated | 7 February 2020 02:27 CET | Update | https://www.mdpi.com/1996-1073/8/12/12435 |
| article html file updated | 6 May 2019 04:32 CEST | Update | N/A |
| article html file updated | 26 March 2019 16:50 CET | Original file | N/A |
| article pdf uploaded. | 19 December 2015 07:29 CET | Version of Record | https://www.mdpi.com/1996-1073/8/12/12435/pdf |
| article xml uploaded. | 19 December 2015 07:29 CET | Original file | https://www.mdpi.com/1996-1073/8/12/12435/xml |
