| article html file updated | 7 February 2020 04:16 CET | Update | https://www.mdpi.com/2297-8739/3/1/5 |
| article html file updated | 6 May 2019 00:59 CEST | Update | N/A |
| article html file updated | 26 March 2019 20:06 CET | Update | N/A |
| article html file updated | 19 April 2016 11:56 CEST | Original file | N/A |
| article pdf uploaded. | 22 March 2016 13:49 CET | Updated version of record | https://www.mdpi.com/2297-8739/3/1/5/pdf |
| article pdf uploaded. | 4 February 2016 09:19 CET | Version of Record | https://www.mdpi.com/2297-8739/3/1/5/pdf-vor |
| article xml uploaded. | 4 February 2016 09:19 CET | Original file | https://www.mdpi.com/2297-8739/3/1/5/xml |
