| article html file updated | 7 February 2020 17:20 CET | Update | https://www.mdpi.com/2297-8739/3/4/32 |
| article html file updated | 4 May 2019 23:49 CEST | Update | N/A |
| article html file updated | 28 December 2016 08:27 CET | Update | N/A |
| article html file updated | 1 November 2016 10:37 CET | Original file | N/A |
| article xml uploaded. | 1 November 2016 10:35 CET | Original file | https://www.mdpi.com/2297-8739/3/4/32/xml |
| article pdf uploaded. | 1 November 2016 10:35 CET | Version of Record | https://www.mdpi.com/2297-8739/3/4/32/pdf |
