| article html file updated | 5 February 2020 12:01 CET | Update | https://www.mdpi.com/1422-8599/2003/2/M315 |
| article html file updated | 9 May 2019 12:00 CEST | Update | - |
| article html file updated | 19 March 2019 17:55 CET | Update | - |
| article html file updated | 26 September 2017 09:54 CEST | Update | - |
| article xml uploaded. | 26 September 2017 09:53 CEST | Update | https://www.mdpi.com/1422-8599/2003/2/M315/xml |
| article html file updated | 21 September 2017 11:21 CEST | Update | - |
| article xml uploaded. | 21 September 2017 11:20 CEST | Original file | - |
| article html file updated | 14 December 2016 09:02 CET | Original file | - |
