Mormul, Piotr. "Singularities of triples of vector fields on $R^{4}$: the focusing stratum." Studia Mathematica 91.3 (1988): 241-273. <http://eudml.org/doc/218889>.
@article{Mormul1988, author = {Mormul, Piotr}, journal = {Studia Mathematica}, keywords = {smooth vector fields; stratification; Thom-Boardman type}, language = {eng}, number = {3}, pages = {241-273}, title = {Singularities of triples of vector fields on $R^\{4\}$: the focusing stratum}, url = {http://eudml.org/doc/218889}, volume = {91}, year = {1988}, }
TY - JOUR AU - Mormul, Piotr TI - Singularities of triples of vector fields on $R^{4}$: the focusing stratum JO - Studia Mathematica PY - 1988 VL - 91 IS - 3 SP - 241 EP - 273 LA - eng KW - smooth vector fields; stratification; Thom-Boardman type UR - http://eudml.org/doc/218889 ER -