1. B. S. Kashin, “A property of bilinear forms,” Soobshch. Akad. Nauk Gruzin. SSR 97 (1), 29–32 (1980).
2. B. S. Kashin, “Some properties of matrices of bounded operators from the space $$l_2^n$$ into $$l_2^m$$,” Izv. Akad. Nauk Armyan. SSR Ser. Mat. 15 (5), 379–394 (1980).
3. B. S. Kashin, “Lunin’s method for selecting large submatrices with small norm,” Mat. Sb. 206 (7), 95–102 (2015) [Sb. Math. 206 (7), 980–987 (2015)]
4. A. W. Marcus, D. A. Spielman, and N. Srivastava, “Interlacing families II: Mixed characteristic polynomials and the Kadison—Singer problem,” Ann. of Math (2) 182 (1), 327–350 (2015)
5. N. Srivastava, Interlacing Families Open Problems, Manuscript (2015),
https://math.berkeley.edu/~nikhil/courses/270/open.pdf
.