| article html file updated | 7 February 2020 05:07 CET | Update | https://www.mdpi.com/1422-0067/17/3/252 |
| article html file updated | 5 May 2019 23:06 CEST | Update | - |
| article html file updated | 26 March 2019 21:53 CET | Update | - |
| article html file updated | 30 March 2016 11:59 CEST | Original file | - |
| article pdf uploaded. | 26 February 2016 11:50 CET | Version of Record | https://www.mdpi.com/1422-0067/17/3/252/pdf |
| article xml uploaded. | 26 February 2016 11:50 CET | Original file | https://www.mdpi.com/1422-0067/17/3/252/xml |
