https://dds.las.ac.cn/service/document?appId=a1vacbnPuv9qJRzJvdNXfsesj9JbIa6e&appKey=sPBA4vANLzjnW1k5eufEcc4k7dxfNraW&ts=1763049773095&signature=58aa9d488fd847d942a6180ca3eac476&articleTitle=Physical+Models+and+Equilibrium+Methods+in+Programming+and+Economics&articleAuthor=B.S.+Razumikhin&publicationTitle=Physical+Models+and+Equilibrium+Methods+in+Programming+and+Economics&language=&publicationType=1&publishYear=1984&isn=9789027716446&publisher=Springer+Netherlands