Não informado. (1971). Lecture Notes in Economics and Mathematical Systems. Springer Verlag.
Lua i Stíl Chicago (17ú heag.)Não informado. Lecture Notes in Economics and Mathematical Systems. Berlin: Springer Verlag, 1971.
Lua MLA (8ú heag.)Não informado. Lecture Notes in Economics and Mathematical Systems. Springer Verlag, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.