@Article{gmd-8-1979-2015,
AUTHOR = {Du, J. and Chen, C. and Lesur, V. and Wang, L.},
TITLE = {Non-singular spherical harmonic expressions of geomagnetic vector and gradient tensor fields in the local north-oriented reference frame},
JOURNAL = {Geoscientific Model Development},
VOLUME = {8},
YEAR = {2015},
NUMBER = {7},
PAGES = {1979--1990},
URL = {https://gmd.copernicus.org/articles/8/1979/2015/},
DOI = {10.5194/gmd-8-1979-2015}
}