TY - JOUR AU - Crowley, Diarmuid J. AU - Zvengrowski, Peter D. TI - On the non-invariance of span and immersion co-dimension for manifolds JO - Archivum mathematicum PY - 2008 SP - 353 EP - 365 VL - 44 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ARM_2008__44_5_a2/ LA - en ID - ARM_2008__44_5_a2 ER -