@article{IM_1990__100_2_143781,
     author = {Dennis Johnson and John J. Millson},
     title = {Modular {Lagrangians} and the theta multiplier.},
     journal = {Inventiones mathematicae},
     pages = {143--166},
     publisher = {mathdoc},
     volume = {100},
     number = {2},
     year = {1990},
     zbl = {0699.10042},
     url = {http://geodesic.mathdoc.fr/item/IM_1990__100_2_143781/}
}