@article {MR1696596,
    AUTHOR = {Kulpa, Wladyslaw},
     TITLE = {Poincar\'{e} and domain invariance theorem},
   JOURNAL = {Acta Univ. Carolin. Math. Phys.},
  FJOURNAL = {Acta Universitatis Carolinae. Mathematica et Physica},
    VOLUME = {39},
      YEAR = {1998},
    NUMBER = {1-2},
     PAGES = {127--136},
      ISSN = {0001-7140},
   MRCLASS = {54H25 (55M20)},
  MRNUMBER = {1696596},
MRREVIEWER = {Joachim\ A.\ Hempel},
}




@article {MR1978889,
    AUTHOR = {Kulpa, W{\l}adys{\l}aw},
     TITLE = {On extensions of the domain invariance theorem},
   JOURNAL = {Topology Appl.},
  FJOURNAL = {Topology and its Applications},
    VOLUME = {130},
      YEAR = {2003},
    NUMBER = {3},
     PAGES = {253--258},
      ISSN = {0166-8641,1879-3207},
   MRCLASS = {54H25 (55M20)},
  MRNUMBER = {1978889},
MRREVIEWER = {Zdzis\l aw\ Dzedzej},
       DOI = {10.1016/S0166-8641(02)00223-7},
       URL = {https://doi.org/10.1016/S0166-8641(02)00223-7},
}