• [1] Graham Higman, Ordering by divisibility in abstract algebras, Proc. London Math. Soc. (3) 2 (1952), 326–336. MR 0049867 (14,238e)
• [2] Joseph Kruskal, Well-partial-order and Rado's conjecture, submitted to the Proc. London Math. Soc.
• [3] -, The theory of well-partially-ordered sets, June, 1954, Princeton University, doctoral thesis.
• [4] B. H. Neumann, On ordered division rings, Trans. Amer. Math. Soc. 66 (1949), 202–252. MR 0032593 (11,311f), http://dx.doi.org/10.1090/S0002-9947-1949-0032593-5
• [5] R. Rado, Partial well-ordering of sets of vectors, Mathematika 1 (1954), 89–95. MR 0066441 (16,576b)

Bibliography

[1]

Graham Higman, Ordering by divisibility in abstract algebras, Proc. London Math. Soc. vol. 2 (1952) pp. 326-336. MR 0049867 (14:238e)

[2]

Joseph Kruskal, Well-partial-order and Rado's conjecture, submitted to the Proc. London Math. Soc.

[3]

-, The theory of well-partially-ordered sets, June, 1954, Princeton University, doctoral thesis.

[4]

B. H. Neumann, On ordered division rings, Trans. Amer. Math. Soc. vol. 66 (1949) pp. 202-346. MR 0032593 (11:311f)

[5]

Richard Rado, Partial well-ordering of sets of vectors, Mathematika vol. 1 (1954) pp. 89-95. MR 0066441 (16:576b)