\Bibitem{1} \paper Academician L. V. Kantorovich \jour Sibirsk. Mat. Zh. \yr 1972 \vol 13 \issue 1 \pages 3--5 \mathnet{http://mi.mathnet.ru/smj4429} \zmath{https://zbmath.org/?q=an:0243.01021} \transl \jour Siberian Math. J. \yr 1972 \vol 13 \issue 1 \pages 1--2 \crossref{https://doi.org/10.1007/BF00967630}