Glej npr. Sander (1994) za preprostejšo diofantsko formulacijo z bolj specifičnimi privzetki kateri x, y in z so deljivi z n. Sander, J. W. (1994), »On 4/n = 1/x + 1/y + 1/z and Iwaniec' half-dimensional sieve«, Journal of Number Theory, 46 (2): 123–136, doi:10.1006/jnth.1994.1008, MR1269248
Obláth (1950), Rosati (1954), Kiss (1959), Bernstein (1962), Yamamoto (1965), Terzi (1971), Jollensten (1976), Kotsireas (1999). Obláth, Richard (1950), »Sur l'équation diophantienne 4/n = 1/x1 + 1/x2 + 1/x3«, Mathesis (v francoščini), 59: 308–316, MR0038999 Rosati, Luigi Antonio (1954), »Sull'equazione diofantea 4/n = 1/x1 + 1/x2 + 1/x3«, Boll. Un. Mat. Ital. (3) (v italijanščini), 9: 59–63, MR0060526 Kiss, Ernest (1959), »Quelques remarques sur une équation diophantienne«, Acad. R. P. Romîne Fil. Cluj Stud. Cerc. Mat. (v romunščini), 10: 59–62, MR0125069 Bernstein, Leon (1962), »Zur Lösung der diophantischen Gleichung m/n = 1/x + 1/y + 1/z, insbesondere im Fall m = 4«, Journal für die Reine und Angewandte Mathematik (v nemščini), 211: 1–10, MR0142508 Yamamoto, Koichi (1965), »On the Diophantine equation 4/n = 1/x + 1/y + 1/z«, Memoirs of the Faculty of Science. Kyushu University. Series A. Mathematics, 19: 37–47, doi:10.2206/kyushumfs.19.37, MR0177945 Terzi, D. G. (1971), »On a conjecture by Erdős-Straus«, Nordisk Tidskr. Informationsbehandling (BIT), 11 (2): 212–216, doi:10.1007/BF01934370, MR0297703 Jollensten, Ralph W. (1976), »A note on the Egyptian problem«, Proceedings of the Seventh Southeastern Conference on Combinatorics, Graph Theory, and Computing (Louisiana State Univ., Baton Rouge, La., 1976), Congressus Numerantium, zv. XVII, Winnipeg, Man.: Utilitas Math., str. 351–364, MR0429735 Kotsireas, Ilias (1999), »The Erdős-Straus conjecture on Egyptian fractions«, Paul Erdős and his mathematics (Budimpešta 1999), Budimpešta: János Bolyai Math. Soc., str. 140–144, MR1901903
Glej npr. Sander (1994) za preprostejšo diofantsko formulacijo z bolj specifičnimi privzetki kateri x, y in z so deljivi z n. Sander, J. W. (1994), »On 4/n = 1/x + 1/y + 1/z and Iwaniec' half-dimensional sieve«, Journal of Number Theory, 46 (2): 123–136, doi:10.1006/jnth.1994.1008, MR1269248
Obláth (1950), Rosati (1954), Kiss (1959), Bernstein (1962), Yamamoto (1965), Terzi (1971), Jollensten (1976), Kotsireas (1999). Obláth, Richard (1950), »Sur l'équation diophantienne 4/n = 1/x1 + 1/x2 + 1/x3«, Mathesis (v francoščini), 59: 308–316, MR0038999 Rosati, Luigi Antonio (1954), »Sull'equazione diofantea 4/n = 1/x1 + 1/x2 + 1/x3«, Boll. Un. Mat. Ital. (3) (v italijanščini), 9: 59–63, MR0060526 Kiss, Ernest (1959), »Quelques remarques sur une équation diophantienne«, Acad. R. P. Romîne Fil. Cluj Stud. Cerc. Mat. (v romunščini), 10: 59–62, MR0125069 Bernstein, Leon (1962), »Zur Lösung der diophantischen Gleichung m/n = 1/x + 1/y + 1/z, insbesondere im Fall m = 4«, Journal für die Reine und Angewandte Mathematik (v nemščini), 211: 1–10, MR0142508 Yamamoto, Koichi (1965), »On the Diophantine equation 4/n = 1/x + 1/y + 1/z«, Memoirs of the Faculty of Science. Kyushu University. Series A. Mathematics, 19: 37–47, doi:10.2206/kyushumfs.19.37, MR0177945 Terzi, D. G. (1971), »On a conjecture by Erdős-Straus«, Nordisk Tidskr. Informationsbehandling (BIT), 11 (2): 212–216, doi:10.1007/BF01934370, MR0297703 Jollensten, Ralph W. (1976), »A note on the Egyptian problem«, Proceedings of the Seventh Southeastern Conference on Combinatorics, Graph Theory, and Computing (Louisiana State Univ., Baton Rouge, La., 1976), Congressus Numerantium, zv. XVII, Winnipeg, Man.: Utilitas Math., str. 351–364, MR0429735 Kotsireas, Ilias (1999), »The Erdős-Straus conjecture on Egyptian fractions«, Paul Erdős and his mathematics (Budimpešta 1999), Budimpešta: János Bolyai Math. Soc., str. 140–144, MR1901903