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1Academic Journal
Authors: Bencze, Mihaly, Schmidt, Frank, Simion, Rodica, Klamkin, Murray S., Demir, Huseyin, Gilbert, George, Shallit, Jeffrey, Lev, V. F., Dou, Jordi, Fukuta, Jiro, Ruemmler, Ronald E., Vargas, Garrett R., Flowers, Joe, Callan, David, McAvaney, K. L., Shapiro, Daniel, Schmidt,, Harvey
Source: Mathematics Magazine, 1990 Oct 01. 63(4), 273-280.
Access URL: https://www.jstor.org/stable/2690953
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2Academic Journal
Authors: Demir, Huseyin, Ruemmler, Ronald E., Flowers, Joe, McAvaney, K. L., Shapiro, Daniel, Hendel, Russell Jay, Schaumberger, Norman, Briggs, W. E., Franceschine, Nick, Gilbert, George T., Majdabad, Amir Akbary, Moser, William, Vowe, Michael, Callan, David, Tezer, C., Francis, Jim, Wagner, Carl G., Broline, Duane M.
Source: Mathematics Magazine, 1989 Oct 01. 62(4), 274-281.
Access URL: https://www.jstor.org/stable/2689772
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3Academic Journal
Authors: Azzolino, Agnes, Ruemmler, Ronald E.
Source: The Arithmetic Teacher, 1984 Oct 01. 32(2), 12-12.
Access URL: https://www.jstor.org/stable/41194586
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4Periodical
Authors: Ruemmler, Ronald E., Vargas, Garrett R.
Source: Mathematics Magazine; October 1990, Vol. 63, p276-277, 2p