CREATE TABLE table_203_702 (id DECIMAL, "name" TEXT, "type" TEXT, "technologies" TEXT, "author" TEXT, "presented /\ last updated" TEXT, "licence" TEXT, "homepage" TEXT)

what was the total number of times sahi , m. & shilbuya , t. listed as co authors ?
SELECT COUNT(*) FROM table_203_702 WHERE "author" = 'sahli, m. & shibuya, t'
SELECT COUNT(*) FROM "table_203_702" WHERE "author" = 'sahli, m. & shibuya, t'