Retracts of the Sorgenfrey line
Compositio Mathematica, Tome 38 (1979) no. 2, pp. 155-161. 
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     author = {Van Douwen, Eric K.},
     title = {Retracts of the {Sorgenfrey} line},
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     publisher = {Sijthoff et Noordhoff International Publishers},
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     url = {http://www.numdam.org/item/CM_1979__38_2_155_0/}
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Van Douwen, Eric K. Retracts of the Sorgenfrey line. Compositio Mathematica, Tome 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

[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 Unpublished thesis.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 | Zbl

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

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

[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 | Zbl

[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 | Zbl

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

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