E. G. Mal'kovich, V. A. Sharafutdinov, “Zeta-invariants of the Steklov spectrum of a planar domain”, Sibirsk. Mat. Zh., 56:4 (2015), 853–877; Siberian Math. J., 56:4 (2015), 678–698
Ya. V. Bazaikin, E. G. Malkovich, “$\mathrm{Spin}(7)$-structures on complex linear bundles and explicit Riemannian metrics with holonomy group
$\mathrm{SU}(4)$”, Mat. Sb., 202:4 (2011), 3–30; Sb. Math., 202:4 (2011), 467–493
Ya. V. Bazaikin, E. G. Malkovich, “$G_2$-holonomy metrics connected with a 3-Sasakian manifold”, Sibirsk. Mat. Zh., 49:1 (2008), 3–7; Siberian Math. J., 49:1 (2008), 1–4