| article html file updated | 7 February 2020 02:01 CET | Update | https://www.mdpi.com/2075-4701/5/4/2351 |
| article html file updated | 6 May 2019 05:24 CEST | Update | N/A |
| article html file updated | 26 March 2019 16:08 CET | Original file | N/A |
| article pdf uploaded. | 10 December 2015 10:32 CET | Version of Record | https://www.mdpi.com/2075-4701/5/4/2351/pdf |
| article xml uploaded. | 10 December 2015 10:32 CET | Original file | https://www.mdpi.com/2075-4701/5/4/2351/xml |
