1. R. Rockafellar, Convex Analysis (Princeton Univ., Princeton, 1970; Moscow, Mir, 1973).
2. I. V. Batreeva, A. R. Bedenkov, V. I. Zorkal’tsev, and S. L. Sadov, Matching of Partial Forecasts in Balance Models (Komi Nauchn. Tsentr Ural’sk. Otdel. Akad. Nauk SSSR, Syktyvkar, 1990) [in Russian].
3. V. I. Zorkal’tsev and L. I. Chernikova, Rent, Taxes, and Price Structure (Inst. Sist. Energet. Sibirsk. Otdel. Ross. Akad. Nauk, Irkutsk, 1991) [in Russian].
4. V. I. Zorkal’tsev, The Least Squares Method and Its Rivals (Inst. Sist. Energet. Sibirsk. Otdel. Ross. Akad. Nauk, Irkutsk, 1993) [in Russian].
5. V. I. Zorkal’tsev, “Points of a linear manifold that are nearest to the origin,” Comp. Math. Math. Phys. 35(5), 635–641 (1995).