Langer, R. E. (Hrsg.). [ca. 1963]. Nonlinear problems : proceedings of a symposium conducted by the Mathematics Research Center, United States Army, at the University of Wisconsin, Madison, April 30 - May 2, 1962 [Book]. Madison: Univ. of Wisconsin Press.

LANGER, Rudolph E. (Hrsg.). [book]. 1963. Madison: Univ. of Wisconsin Press. Publication ... of the Mathematics Research Center, the University of Wisconsin, Madison, 8.

Langer, R. E., Herausgeber. „Nonlinear problems : proceedings of a symposium conducted by the Mathematics Research Center, United States Army, at the University of Wisconsin, Madison, April 30 - May 2, 1962“. Publication . of the Mathematics Research Center, the University of Wisconsin, Madison, book, Univ. of Wisconsin Press, 1963.

Langer, R.E. (Hrsg.). (1963), „Nonlinear problems : proceedings of a symposium conducted by the Mathematics Research Center, United States Army, at the University of Wisconsin, Madison, April 30 - May 2, 1962“, Publication ... of the Mathematics Research Center, the University of Wisconsin, Madison, Univ. of Wisconsin Press, Madison.