Tefteller, S.C.. "A polar coordinate transformation for nonhomogeneous differential systems." Portugaliae mathematica 34.4 (1975): 219-223. <http://eudml.org/doc/115267>.
@article{Tefteller1975, author = {Tefteller, S.C.}, journal = {Portugaliae mathematica}, language = {eng}, number = {4}, pages = {219-223}, publisher = {Sociedade Portuguesa de Matemática}, title = {A polar coordinate transformation for nonhomogeneous differential systems}, url = {http://eudml.org/doc/115267}, volume = {34}, year = {1975}, }
TY - JOUR AU - Tefteller, S.C. TI - A polar coordinate transformation for nonhomogeneous differential systems JO - Portugaliae mathematica PY - 1975 PB - Sociedade Portuguesa de Matemática VL - 34 IS - 4 SP - 219 EP - 223 LA - eng UR - http://eudml.org/doc/115267 ER -