@article{10_4064_sm_88_3_269_274,
     author = {Ralph de Laubenfels},
     title = {Vectors of uniqueness for id/dx},
     journal = {Studia Mathematica},
     pages = {269--274},
     year = {1988},
     volume = {88},
     number = {3},
     doi = {10.4064/sm-88-3-269-274},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-88-3-269-274/}
}