@book{UBHD-3498810, author={Heller, Alex}, title={Homotopy theories}, publisher={American Mathematical Soc.}, address={Providence, RI}, year={1988}, pages={V, 78 S.}, language={eng}, isbn={0-8218-2446-5 and 978-0-8218-2446-7}, number={ARRAY(0x55c1cadae6e0)}, series={Memoirs of the American Mathematical Society}, keywords={Homotopie / {\"A}quivariante Homotopie ; Homotopietheorie}, library={UB [Signatur: UBN/SI 990 H477] ; MA [Signatur: Helle]}, }