| article html file updated | 8 February 2020 01:59 CET | Update | https://www.mdpi.com/1422-0067/18/3/681 |
| article html file updated | 23 September 2019 22:54 CEST | Update | N/A |
| article html file updated | 4 May 2019 05:34 CEST | Update | N/A |
| article html file updated | 30 March 2017 10:52 CEST | Update | N/A |
| article html file updated | 27 March 2017 05:24 CEST | Update | N/A |
| article html file updated | 24 March 2017 07:06 CET | Update | N/A |
| article html file updated | 22 March 2017 11:25 CET | Original file | N/A |
| article xml uploaded. | 22 March 2017 11:24 CET | Original file | https://www.mdpi.com/1422-0067/18/3/681/xml |
| article pdf uploaded. | 22 March 2017 11:24 CET | Version of Record | https://www.mdpi.com/1422-0067/18/3/681/pdf |
