| article html file updated | 5 February 2020 12:02 CET | Update | https://www.mdpi.com/1422-8599/2003/2/M321 |
| article html file updated | 9 May 2019 12:00 CEST | Update | N/A |
| article html file updated | 19 March 2019 17:56 CET | Update | N/A |
| article html file updated | 26 September 2017 10:04 CEST | Update | N/A |
| article xml uploaded. | 26 September 2017 10:02 CEST | Update | https://www.mdpi.com/1422-8599/2003/2/M321/xml |
| article html file updated | 21 September 2017 10:51 CEST | Update | N/A |
| article xml uploaded. | 21 September 2017 10:50 CEST | Original file | N/A |
| article html file updated | 14 December 2016 09:19 CET | Original file | N/A |
