| article html file updated | 7 February 2020 10:27 CET | Update | https://www.mdpi.com/1422-0067/17/6/973 |
| article html file updated | 5 May 2019 12:24 CEST | Update | N/A |
| article html file updated | 27 March 2019 07:59 CET | Update | N/A |
| article html file updated | 29 June 2016 04:02 CEST | Update | N/A |
| article html file updated | 20 June 2016 14:42 CEST | Original file | N/A |
| article xml uploaded. | 20 June 2016 14:40 CEST | Original file | https://www.mdpi.com/1422-0067/17/6/973/xml |
| article pdf uploaded. | 20 June 2016 14:40 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/6/973/pdf |
