Freiling, C.; Rinne, D. (1994), Tiling a square with similar rectangles, Mathematical Research Letters, 1 (5): 547—558, doi:10.4310/MRL.1994.v1.n5.a3, MR1295549
Freiling, C.; Rinne, D. (1994), Tiling a square with similar rectangles, Mathematical Research Letters, 1 (5): 547—558, doi:10.4310/MRL.1994.v1.n5.a3, MR1295549