Problem 11245. - Cezar Lupu; Tudorel Lupu (Am. Math. Mon., 2006)

Problem 11290. - Cezar Lupu; Tudorel Lupu (Am. Math. Mon., 2007)

Problem 11313. - Cezar Lupu; Tudorel Lupu (Am. Math. Mon., 2007)

Problem 11341. - Cezar Lupu (Am. Math. Mon., 2008)

Problem 11349. - Cezar Lupu (Am. Math. Mon., 2008)

Problem 11360. - Cezar Lupu (Am. Math. Mon., 2008)

Problem 11375. - Cezar Lupu (Am. Math. Mon., 2008)

A Variant Intermediate Value: 11290. - Cezar Lupu; Kenneth F. Andersen (Am. Math. Mon., 2008)

A New Bound for r/R: 11245. - Cezar Lupu; Tudorel Lupu; Ronald A. Kopas (Am. Math. Mon., 2008)

Problem 11417. - Cezar Lupu (Am. Math. Mon., 2009)

Problem 11429. - Cezar Lupu (Am. Math. Mon., 2009)

Problem 11458. - Cezar Lupu (Am. Math. Mon., 2009)

An Application of Popovidu's Inequality: 11341 [2008, 166]. - Cezar Lupu; Marian Tetiva (Am. Math. Mon., 2009)

From Integral to Derivative: 11313 [2007, 744]. - Cezar Lupu; Li Zhou 001 (Am. Math. Mon., 2009)

Variational-Like Inequality Problems Involving Set-Valued Maps and Generalized Monotonicity. - Nicusor Costea; Daniel Alexandru Ion; Cezar Lupu (J. Optim. Theory Appl., 2012)

Another look at some new Cauchy-Schwarz type inner product inequalities. - Cezar Lupu; Dan Schwarz (Appl. Math. Comput., 2014)

A New Proof of the Finsler-Hadwiger Inequality. - Cezar Lupu (Am. Math. Mon., 2017)