In 1971, Homosexual Action West Berlin (HAW) was formed and within a year, eight lesbians had joined the movement opening a women's group within HAW in a commune in Schöneberg. Among the eight members of the group were Ilse Kokula, Monne Kühn, Gisela Necker, Cristina Perincioli, Eva Rieger, Waltraut Siepert, and Christel Wachowski.[38] Some of these women were instrumental in founding the Berlin Women's Center. Placing an advertisement in the alternative journal Hundert Blumen, in November 1972, Perincioli and Siepert attracted around seventy women who were interested in an apolitical group where women could meet, share publications, counsel and interact with other women.