by Ringold, H. J., Ruelas, J. Perez, Batres, E., Djerassi, Carl
Published in Journal of the American Chemical Society (01.07.1959)

by RUELAS, J. PEREZ, IRIARTE, J., KINCL, F., DJERASSI, CARL
Published in Journal of organic chemistry (01.11.1958)

by RUELAS, J. PEREZ, IRIARTE, J, KINCL, F, DJERASSI, CARL
Published in Journal of organic chemistry (01.11.1958)

by Ringold, H. J, Ruelas, J. Perez, Batres, E, Djerassi, Carl
Published in Journal of the American Chemical Society (01.07.1959)

by Knox, Lawrence H., Zderic, John A., Ruelas, J. Pérez, Djerassi, Carl, Ringold, H. J.
Published in Journal of the American Chemical Society (01.03.1960)

by Knox, Lawrence H, Zderic, John A, Ruelas, J. Pérez, Djerassi, Carl, Ringold, H. J
Published in Journal of the American Chemical Society (01.03.1960)