TY - JOUR AU - Stanisław Betley TI - Multiplicative maps from $H\mathbb Z$ to a ring spectrum $R$—a naive version JO - Fundamenta Mathematicae PY - 2012 SP - 193 EP - 205 VL - 216 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm216-3-1/ DO - 10.4064/fm216-3-1 LA - en ID - 10_4064_fm216_3_1 ER -