@article{AndrzejakWelzl2003, author = {Artur Andrzejak and Emo Welzl}, title = {In between k-Sets, j-Facets, and i-Faces: (i , j) - Partition}, journal = {Discrete \& Computational Geometry}, volume = {29}, number = {1}, pages = {105 -- 131}, doi = {s00454-002-2778-4}, year = {2003}, }