TY - JOUR AU - Li, Jian-Shu AU - Schwermer, Joachim TI - Constructions of automorphic forms and related cohomology classes for arithmetic subgroups of $G_2$ JO - Compositio Mathematica PY - 1993 SP - 45 EP - 78 VL - 87 IS - 1 PB - Kluwer Academic Publishers UR - http://www.numdam.org/item/CM_1993__87_1_45_0/ LA - en ID - CM_1993__87_1_45_0 ER -