@article{7045, title = {A short note on parameter approximation for von Mises-Fisher distributions: and a fast implementation of Is(x) }, author = {Sra, S.}, journal = {Computational Statistics}, volume = {27}, number = {1}, pages = {177-190}, organization = {Max-Planck-Gesellschaft}, school = {Biologische Kybernetik}, month = mar, year = {2012}, doi = {10.1007/s00180-011-0232-x}, month_numeric = {3} }