@article{IM_1989__95_3_143651,
     author = {Giko Ikegami},
     title = {Singular perturbations in foliations.},
     journal = {Inventiones mathematicae},
     pages = {215--246},
     publisher = {mathdoc},
     volume = {95},
     number = {3},
     year = {1989},
     zbl = {0671.58032},
     url = {http://geodesic.mathdoc.fr/item/IM_1989__95_3_143651/}
}