| article html file updated | 7 February 2020 22:26 CET | Update | https://www.mdpi.com/1422-0067/18/2/270 |
| article html file updated | 23 September 2019 02:42 CEST | Update | - |
| article html file updated | 4 May 2019 13:11 CEST | Update | - |
| article html file updated | 2 March 2017 09:48 CET | Update | - |
| article html file updated | 6 February 2017 07:10 CET | Original file | - |
| article xml uploaded. | 6 February 2017 07:09 CET | Original file | https://www.mdpi.com/1422-0067/18/2/270/xml |
| article pdf uploaded. | 6 February 2017 07:09 CET | Updated version of record | https://www.mdpi.com/1422-0067/18/2/270/pdf |
| article pdf uploaded. | 29 January 2017 02:50 CET | Version of Record | https://www.mdpi.com/1422-0067/18/2/270/pdf-vor |
