1. On the factorization of operators in Hilbert space;Gohberg;Acta Sci. Math. (Szeged),1964
2. On the factorization of operators in Hilbert space
3. Integral equations on the half-line with kernels depending on the difference of the arguments;Krein;Uspehi Mat. Nauk.,1958
4. Integral equations on a half-line with kernel depending upon the difference of the arguments
5. Systems of Integral Equations with Kernels Depending on the Difference of Arguments;Gohberg;Uspehi Mat. Nauk.,1958