| article html file updated | 6 February 2020 03:36 CET | Update | https://www.mdpi.com/2220-9964/2/3/704 |
| article html file updated | 8 May 2019 02:07 CEST | Update | N/A |
| article html file updated | 21 March 2019 02:25 CET | Update | N/A |
| article html file updated | 17 June 2015 12:00 CEST | Update | N/A |
| article html file updated | 5 August 2013 11:16 CEST | Original file | N/A |
| article xml uploaded. | 5 August 2013 11:16 CEST | Original file | https://www.mdpi.com/2220-9964/2/3/704/xml |
| article pdf uploaded. | 5 August 2013 11:13 CEST | Version of Record | https://www.mdpi.com/2220-9964/2/3/704/pdf |
