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\newblock R package version 3.1-0.

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\newblock L. Erlbaum Associates, Mahwah, N.J.

\bibitem[\protect\astroncite{Novomestky}{2012}]{matrixcalc}
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\newblock R package version 1.0-3.

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\newblock {\em psych: Procedures for Personality and Psychological Research}.
\newblock Northwestern University, Evanston,
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\newblock R package version 1.3.1.

\bibitem[\protect\astroncite{Revelle and Zinbarg}{2009}]{rz:09}
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\newblock Coefficients alpha, beta, omega and the glb: comments on {Sijtsma}.
\newblock {\em Psychometrika}, 74(1):145--154.

\bibitem[\protect\astroncite{Venables and Ripley}{2002}]{MASS}
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\newblock {\em Modern Applied Statistics with S}.
\newblock Springer, New York, fourth edition.
\newblock ISBN 0-387-95457-0.

\bibitem[\protect\astroncite{Zinbarg et~al.}{2005}]{zinbarg:pm:05}
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\newblock Cronbach's {$\alpha$}, {Revelle's} {$\beta$}, and {McDonald's}
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\newblock {\em Psychometrika}, 70(1):123--133.

\bibitem[\protect\astroncite{Zinbarg et~al.}{2006}]{zinbarg:apm:06}
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