BIOTECHNOLOGY LETTERS, vol. 3, no. 11, page. 607 - 612, 1981-01
BIOTECHNOLOGY AND BIOENGINEERING, vol. 24, no. 10, page. 2215 - 2226, 1982-01
BIOTECHNOLOGY AND BIOENGINEERING, vol. 24, no. 7, page. 1623 - 1637, 1982-01