| article html file updated | 8 February 2020 00:51 CET | Update | https://www.mdpi.com/2076-3417/7/3/257 |
| article html file updated | 23 September 2019 16:21 CEST | Update | - |
| article html file updated | 4 May 2019 08:03 CEST | Update | - |
| article html file updated | 28 March 2017 03:42 CEST | Update | - |
| article html file updated | 8 March 2017 02:41 CET | Original file | - |
| article xml uploaded. | 8 March 2017 02:40 CET | Original file | https://www.mdpi.com/2076-3417/7/3/257/xml |
| article pdf uploaded. | 8 March 2017 02:40 CET | Updated version of record | https://www.mdpi.com/2076-3417/7/3/257/pdf |
| article pdf uploaded. | 6 March 2017 10:27 CET | Version of Record | https://www.mdpi.com/2076-3417/7/3/257/pdf-vor |
