Complex sentence: Grumbach also wrote an influential review of the novel "Wise Blood" by Flannery O’Connor and an article on an aborted plan to write a biography of Willa Cather, which was published in the American Scholar journal of the Phi Beta Kappa society in January 2001.
Split into simpler sentences: Grumbach also wrote an influential review of the novel "Wise Blood" by Flannery O’Connor. Her article on an aborted plan to write a biography of Willa Cather was published in the "American Scholar" in January 2001.