| article html file updated | 5 February 2020 12:00 CET | Update | https://www.mdpi.com/1422-8599/2005/6/M448 |
| article html file updated | 18 September 2019 17:27 CEST | Update | N/A |
| article html file updated | 9 May 2019 12:04 CEST | Update | N/A |
| article html file updated | 19 March 2019 17:53 CET | Update | N/A |
| article html file updated | 22 September 2017 15:07 CEST | Update | N/A |
| article xml uploaded. | 22 September 2017 15:06 CEST | Original file | https://www.mdpi.com/1422-8599/2005/6/M448/xml |
| article html file updated | 14 December 2016 10:14 CET | Original file | N/A |
