Muniategui, S., Sancho, M. T., Pérez, S., Huidobro, F. and Simal, J. (1991) “Some physical and chemical constants from bee-collected pollen lipids”, Grasas y Aceites, 42(2), pp. 148–150. doi: 10.3989/gya.1991.v42.i2.1263.