Complex sentence: A group of colleagues and former students organized a conference in honor of his retirement in 2002 which resulted in a festschrift, "The People and the Dao", (Monumenta Serica Monograph Series LX).
Split into simpler sentences: A group of colleagues and former students organized a 2002 conference in honor of his retirement the previous year. The essays and presentations were published in a festschrift, "The People and the Dao", (Monumenta Serica Monograph Series LX).