BLP articles lacking sources from April 2022

Roy Mark Hofheinz Jr. (born 1935) is an American academic, sinologist who was Professor of Government at Harvard University. He is best-known for his work on the Chinese Communist Revolution.

Ivar Tollefsen (born 23 June 1961) is a Norwegian businessman, the founder of Tollefsen Enterprises and Fredensborg AS.

Loren R. Graham (born June 29, 1933, in Hymera, Indiana) is an American historian of science, particularly science in Russia.

François Alu (born 1993 in Fussy) is a French ballet dancer. He danced with the Paris Opera Ballet as an étoile (star).He entered the Paris Opera Ballet School in 2004, and the Paris Opera Ballet in 2010. At his first promotion competition in 2011, he was promoted to coryphée, then to sujet (semi-soloist) in 2013.
He has been a member of 3e étage, an independent dance group formed by dancers of the company’s corps de ballet and directed by Samuel Murez, since 2011.
In 2014, he was promoted to first dancer (full soloist). Notable roles include Basilio in Don Quixote, the Golden Idol in La Bayadère, Frollo in Roland Petit's Notre Dame de Paris, and Byraxis in Benjamin Millepied's Daphnis et Chloé.On 23 April 2022, Alu was named étoile following a performance as Solor in La Bayadère. In November, Alu left the Paris Opera Ballet.

Christopher Ferdinand Durang (born January 2, 1949) is an American playwright known for works of outrageous and often absurd comedy. His work was especially popular in the 1980s, though his career seemed to get a second wind in the late 1990s.
Sister Mary Ignatius Explains It All For You was Durang's watershed play as it brought him to national prominence when it won him—at the age of 32—the Obie Award for Best Playwright (1980). His play Vanya and Sonia and Masha and Spike won the Tony Award for Best Play in 2013. The production was directed by Nicholas Martin, and featured Sigourney Weaver, David Hyde Pierce, Kristine Nielsen, Billy Magnussen, Shalita Grant and Genevieve Angelson. Durang is a former co-director of the Lila Acheson Wallace American Playwrights Program at Juilliard.