@article{1327351, author = {David Penn}, title = {Bound Hole Pairs in Ni: Evidence from Photoemissions}, year = {1979}, number = {50}, month = {1979-11-01 00:11:00}, publisher = {Journal of Applied Physics}, url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=620176}, language = {en}, }