@misc{indiciae349320bc6b31, title = {Equatorward shift of the cusp during magnetospheric substorms}, author = {Akasofu, S.-I. and Roederer, M. and Corrick, G. K. and Covey, D. N.}, year = {1981}, url = {https://ntrs.nasa.gov/citations/19810043159}, note = {Source identifier: 19810043159} }