@article{700798,
     title = {Complementary inductive invariants and dimension},
     booktitle = {General Topology and its Relations to Modern Analysis and Algebra},
     series = {GDML\_Books},
     publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1972},
     pages = {17-18},
     mrnumber = {MR0358735},
     zbl = {0308.54027},
     url = {http://dml.mathdoc.fr/item/700798}
}

Aarts, Jan M. Complementary inductive invariants and dimension, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1972), pp. 17-18. http://gdmltest.u-ga.fr/item/700798/