@misc{indiciae628c2d772d09, title = {Schwinger-DeWitt proper-time expansion and eikonal approximation.}, author = {SK Kim and C Lee and DP Min}, year = {1985}, doi = {10.1103/physrevd.31.829}, url = {https://pubmed.ncbi.nlm.nih.gov/9955763/}, note = {Source identifier: 9955763} }