The first of these publications was Weighted quadratic norms and ultraspherical polynomials in 1959 which he wrote jointly with Isidore Hirschman Jr. It appeared in the Transactions of the American Mathematical Society.
Ang unang mga pahayagan ng mga ito ay may timbang parisukat norms at ultraspherical polynomials sa 1959 kung saan siya wrote sama-sama sa Isidore Hirschman Jr Ito ay lumitaw sa mga transaksyon ng mga Amerikanong matematiko Society.