https://scholarsphere.psu.edu/resources/2b6eb891-593c-4091-995a-5a161284da0d
https://scholarsphere.psu.edu/resources/98f8d2d6-fdf5-4cda-b8d0-c229ee380571
https://scholarsphere.psu.edu/resources/12b937e4-a80a-44ab-aaa4-e09005bc40ca
https://scholarsphere.psu.edu/resources/16a58872-f9ee-4034-bbce-d41e93bce9ed
https://scholarsphere.psu.edu/resources/2b6eb891-593c-4091-995a-5a161284da0d
https://scholarsphere.psu.edu/resources/f4e4015b-7d8e-4bbc-b9f6-a748efd0b0c8

https://scholarsphere.psu.edu/resources/4eca27c8-fb22-4e2c-95be-da234299e241
https://scholarsphere.psu.edu/resources/f2fd22b1-ea50-4fc8-8a63-0c3bbaf2ca09
https://scholarsphere.psu.edu/resources/a839431f-e9cd-4673-9829-68dcbcaa754a