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References
Brown, W. G.: Enumeration of non-separable planar maps. Canad. J. Math.15, 526–545 (1963).
—— Enumeration of triangulations of the disc. Proc. London Math. Soc. (3)14, 746–768 (1964).
-- Enumeration of quadrangular dissections of the disc. Canad. J. Math. to appear.
——, andW. T. Tutte: On the enumeration of rooted non-separable planar maps. Canad. J. Math.16, 572–577 (1964).
Tutte, W. T.: A census of planar triangulations. Canad. J. Math.14, 21–38 (1962).
van der Waerden, B. L.: Einführung in die algebraische Geometrie. New York: Dover Books 1945.
Whittaker, E. T., andG. N. Watson: A course of modern analysis. Cambridge 1927.
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Brown, W.G. On the existence of square roots in certain rings of power series. Math. Ann. 158, 82–89 (1965). https://doi.org/10.1007/BF01370732
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DOI: https://doi.org/10.1007/BF01370732