title = {{Algorithmen zur Formalen Begriffsanalyse}},
author = {B. Ganter}, booktitle = {Beiträge zur Begriffsanalyse }, editor = {B. Ganter and R. Wille and K. E. Wolff}, pages = {241-254}, publisher = {B.I. Wissenschaftsverlag }, year = {1987},
keywords = {algorithm closure concept fca formal next }