TY - JOUR AU - Michael Donahue AU - Donald Porter C2 - Physica B-Condensed Matter DA - 2004-01-01 LA - en M1 - 343 PB - Physica B-Condensed Matter PY - 2004 TI - Exchange Energy Formulations for 3D Micromagnetics UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=150050 ER -