Cohen, Philip R. (1992). "The role of natural language in a multimodal interface". Proceedings of the 5th annual ACM symposium on User interface software and technology - UIST '92. pp. 143–149. doi:10.1145/142621.142641. ISBN0897915496. S2CID9010570.
Cohen, Philip R. (1992). "The role of natural language in a multimodal interface". Proceedings of the 5th annual ACM symposium on User interface software and technology - UIST '92. pp. 143–149. doi:10.1145/142621.142641. ISBN0897915496. S2CID9010570.
Cohen, Philip R. (1992). "The role of natural language in a multimodal interface". Proceedings of the 5th annual ACM symposium on User interface software and technology - UIST '92. pp. 143–149. doi:10.1145/142621.142641. ISBN0897915496. S2CID9010570.
Cohen, Philip R. (1992). "The role of natural language in a multimodal interface". Proceedings of the 5th annual ACM symposium on User interface software and technology - UIST '92. pp. 143–149. doi:10.1145/142621.142641. ISBN0897915496. S2CID9010570.