Retracts of the Sorgenfrey line
Compositio Mathematica, Volume 38 (1979) no. 2, p. 155-161
@article{CM_1979__38_2_155_0,
     author = {Van Douwen, Eric K.},
     title = {Retracts of the Sorgenfrey line},
     journal = {Compositio Mathematica},
     publisher = {Sijthoff et Noordhoff International Publishers},
     volume = {38},
     number = {2},
     year = {1979},
     pages = {155-161},
     zbl = {0408.54004},
     mrnumber = {528838},
     language = {en},
     url = {http://www.numdam.org/item/CM_1979__38_2_155_0}
}
Van Douwen, Eric K. Retracts of the Sorgenfrey line. Compositio Mathematica, Volume 38 (1979) no. 2, pp. 155-161. http://www.numdam.org/item/CM_1979__38_2_155_0/

[1] P. Alexandroff and P. Urysohn: Mémoire sur les espaces topologiques compacts, Verhandelingen der Koninklijke Akademie van Wetenschappen, Afdeeling Natuurkunde, Sectie 1, 14 (1924) 1-96. | JFM 55.0960.02

[2] E.K. Van Douwen: "Simultaneous, extension of continuous functions." Unpublished thesis. Amsterdam (1975).

[3] E.K. Van Douwen: Simultaneous linear extension of continuous functions, Gen. Top. Appl., 5 (1975) 297-319. | MR 380715 | Zbl 0309.54013

[4] R. Engelking: On closed images of the space of irrationals, Proc. AMS, 21 (1969) 583-586. | MR 239571 | Zbl 0177.25501

[5] R.W. Heath and D.J. Lutzer: Dugundji extension theorems for linearly ordered spaces, Pacific J. M., 55 (1974) 419-425. | MR 370477 | Zbl 0302.54017

[6] R.W. Heath and D.J. Lutzer: The Dugundji extension property and collection-wise normality, Bull. Acad. Polon. Sci. Ser. Math. Astronom. Phys., 22 (1974) 827-830. | MR 375228 | Zbl 0297.54013

[7] R.W. Heath, D.J. Lutzer and P.L. Zenor: On continuous extenders. Studies in topology, ed. by N.M. Stavras and K.R. Allen (1975). | MR 358675 | Zbl 0312.54021

[8] P. Nyikos and H.-C. Reichel: On the structure of zero-dimensional spaces, Indag. Math., 37 (1975) 120-136. | MR 365527 | Zbl 0314.54038

[9] W. Sierpiński: Sur les projections des ensembles complémentaires aux ensembles (A), Fund. Math., 11 (1928) 107-113. | JFM 54.0093.03