Communications of the ACM

President's letter to the ACM membership

A. G. Oettinger
Pages 335-337

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A model for a multifunctional teaching system

K. J. Engvold, J. L. Hughes
Pages 339-342

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Additional references

Vincent E. Giuliano
Page 342

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Relative to the President's December letter

Robert F. Rosin
Page 342

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Pitch period determination of speech sounds

D. R. Reddy
Pages 343-348

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DIALOG: a conversational programming system with a graphical orientation

Scott H. Cameron, Duncan Ewing, Michael Liveright
Pages 349-357

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PL/I list processing

Harold W. Lawson
Pages 358-367

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Storage allocation in a certain iterative process

John Abramowich
Pages 368-370

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The checkless society: individual authorization of payment

David Ross
Page 370

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A generalized Bairstow algorithm

G. H. Golub, T. N. Robertson
Pages 371-373

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Algorithm 303: An adaptive quadrature procedure with random panel sizes

L. J. Gallaher
Pages 373-374

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Algorithm 304: Normal curve integral

I. D. Hill, S. A. Joyce
Pages 374-375

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Remark on Algorithm 179: Incomplete Beta ratio

M. C. Pike, I. D. Hill
Pages 375-376

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Certification of Algorithm 253: Eigenvalues of a real symmetric matrix by the QR method

John H. Welsch
Page 376

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Certification of Algorithm 254: Eigenvalues and Eigenvectors of a real symmetric matrix by the QR method

John H. Welsch
Pages 376-377

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Remarks on Algorithm 209: Gauss

D. Ibbetson
Page 377

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Algorithm 272: Procedure for the normal distribution functions

M. D. MacLaren
Page 377

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Remarks on Algorithm 226: Normal distribution function

S. J. Cyvin
Page 377

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Remarks on Algorithm 123: Real error function, ERF (x)

Martin Crawford, Robert Techo
Page 377

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Remarks on Algorithm 296: Generalized least squares fit by orthogonal polynomials

G. J. Makinson
Page 377

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Algorithm 304: Normal curve integral

I. D. Hill, S. A. Joyce
Page 377

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Security and privacy

James P. Titus
Pages 379-381

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Remarks on Algorithm 180: Error function—large X

Henry C. Thacher
Page 377

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Remarks on Algorithm 181: Complementary error function—large X

Henry C. Thacher
Page 377

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