1. On Goldbach's Problem: Proof that almost all even positive integers are sums of two primes;Estermann,1938
2. There exist an infinity of 3-combinations of primes in A.P.;Chowla,1944
3. There exist an infinity of 3-combinations of primes in A.P.;Chowla,1944
4. Über Summen von Primzahlen und Primzahlquadraten;van der Corput;Math. Ann.,1939
5. Faktorisation der Zahlen der Form x3 ± 4x2 + 3x ∓ 1; x3 ± 57; x3 ± 83; x3 ± 92009; x3 + 4x2 − 25x + 13;Golubev;Anz. Österreich. Akad. Wiss. Math. Natur. Kl.,1969