Problem 11143. - Alexander Dubinov; Irina Dubinova (Am. Math. Mon., 2005)

Problem 11209. - Alexander Dubinov; Irina Dubinova (Am. Math. Mon., 2006)

Closed Form Closure: 11143. - Alexander Dubinov; Irina Dubinova (Am. Math. Mon., 2007)

Can "Closed Form" Involve Lambert? 11209. - Alexander Dubinov; Irina Dubinova; Knut Dale (Am. Math. Mon., 2007)