It is well known that Dold and Milnor manifolds give generators for the unoriented bordism algebra N* over Z2. The purpose of this paper is to determine those Milnor manifolds which represent the same bordism classes in N* as their Dold counterparts.
We give a Pontryagin-Thom type construction for Stein factorizations of fold maps of 3-manifolds into the plane. As an application,
we compute the cobordism group of Stein factorizations of fold maps of oriented 3-manifolds into the plane and the oriented
cobordism group of fold maps of 3-manifolds into the plane. It turns out that these two groups are isomorphic to Z2 ⊕ Z2. We have the analogous results about bordism groups as well.
— Houot 1982 = A. Bocquet— A. Houot : La vie au Néolithique. Charavines un village au bord d’un lac il y a 5000 ans… Histoire et Archéologie, dossiers 64. Dijon 1982.
Ebenhöch = F. Ebenhöch : Győr vidékének