Bobzien S., Ancient Logic, SEP: "The many close similarities between Chrysippus' philosophical logic and that of Gottlob Frege are especially striking." За това съвпадение е предположено и по-пряко влияние, виж Gabriel G., et al., Zur Miete bei Frege – Rudolf Hirzel und die Rezeption der stoischen Logik und Semantik in Jena, J. for History and Philosophy of Logic, Vol.30, (Nov. 2009), p. 369 – 88
