Quarterly Journal of Mechanics and Applied Mathematics (Gratis- Oxford Academic) Vol. 1, No. 1, 1948-
Quarterly of Applied Mathematics (Parcialmente gratis - American Mathematical Society) Vol. 1, No. 1, 1943-
Quarterly Publications of the American Statistical Association (Acceso UNAM - J-Stor) Vol. 17, No. 129, 1920 – Vol. 17, No. 136, 1921