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[1]	M. Fujita and K. Kageyama, “An open architecture for Robot Entertainment,” in Proc. 1st Int. Conf. Autonomous Agents, 1997, pp. 234-242. [Buy Via Ask*IEEE]
[2]	M. Fujita, “AIBO: Toward the era of digital creatures,” Int. J. Robot. Res., vol. 20, no. 10, pp. 781-794, 2001. [CrossRef] [Buy Via Ask*IEEE]
[3]	A. Yokoyama, “The possibility of psychiatric medicine to which robot is applied: From a viewpoint of animal therapy,” presented at the Joint 1st Int. Conf. Soft Computing and Intelligent Systems and 3rd Int. Symp. Advanced Intelligent Systems Tsukuba, Japan, 2002. [Buy Via Ask*IEEE]
[4]	K. Suga, M. Satoh, and K. Hasegawa, “The effect for elderly by interaction with a pet robot,” Koureisha Care, vol. 6, no. 4, pp. 122-127, 2002. [Buy Via Ask*IEEE]
[5]	B. Friedman, P. H. Kahn, Jr., and J. Hagman, “Hardware companions?—What online AIBO discussion forums reveal about the human-robotic relationship,” in Proc. Computer Human Interaction Conf. 2003, pp. 273-280. [Buy Via Ask*IEEE]
[6]	Robotic pets and children: A developmental study [online] Available: http://www.ischool.washington.edu/robotpets/children/index.html .
[7]	Robotic pets and the elderly [online] Available: http://www.ischool.washington.edu/robotpets/elderly/ .
[8]	Pets, both real and robotic [online] Available: http://www.vet.purdue.edu/chab/ .
[9]	M. Fujita and H. Kitano, “Development of an autonomous quadruped robot for Robot Entertainment,” Autonomous Robots, vol. 5, pp. 7-18, 1998. [CrossRef] [Buy Via Ask*IEEE]
[10]	T. R. Haliday and P. J. Slater, Ed. Animal Behavior Cambridge, U.K.: Blackwell, 1983. [Buy Via Ask*IEEE]
[11]	J. Velasquez, H. Kitano, and M. Fujita, “Open architecture for emotion and behavior control of autonomous agents,” in Proc. 2nd Int. Conf. Autonomous Agents, 1998, pp. 473-474. [Buy Via Ask*IEEE]
[12]	R. Arkin, M. Fujita, T. Takagi, and R. Hasegawa, “An ethological and emotional basis for human-robot interaction,” Robot. Auton. Syst., vol. 42, pp. 191-201, 2003. [CrossRef] [Buy Via Ask*IEEE]
[13]	P. Ekman and R. J. Davidson, The Nature of Emotion Oxford, U.K.: Oxford Univ. Press, 1994. [Buy Via Ask*IEEE]
[14]	S. Tsujita and K. Mirimoto, “Secretory IgA in saliva can be useful stress marker,” Environ. Health Prevent. Med., vol. 4, pp. 1-8, 1999. [Buy Via Ask*IEEE]
[15]	J. Weizenbaum, Computer Power and Human Reason: From Judgment to Calculation New York: Freeman, 1976. [Buy Via Ask*IEEE]
[16]	H. Garfinkel, Studies in Ethnomethodology Cambridge, U.K.: Blackwell, 1984. [Buy Via Ask*IEEE]
[17]	C. W. Mills, Power, Politics and People: The Collected Essays of C. Wright Mills New York: Oxford Univ. Press, 1967. [Buy Via Ask*IEEE]
[18]	M. Fujita, R. Hasegawa, T. Takagi, J. Yokono, and H. Shimomura, “An autonomous robot that eats information via interaction with human and environment,” in Proc. 10th IEEE Int. Workshop Robot and Human Interactive Communication 2001, pp. 383-389. [Abstract] [PDF Full-Text (465KB)]
[19]	M. Fujita, T. Takagi, R. Hasegawa, G. Costa, and H. Shimomura, “Physically and emotionally grounded symbol acquisition for autonomous robots,” in Proc. AAAI Fall Symp.: Emotional and Intelligent II, 2001, pp. 43-46. [Buy Via Ask*IEEE]
[20]	F. Kaplan, “Talking AIBO: First experimentation of verbal interactions with an autonomous four-legged robot,” in Proc. CELE-Twente Workshop on Interacting Agents, 2000, pp. 57-63. [Buy Via Ask*IEEE]
[21]	N. Iwahashi and M. Tamura, Spoken language acquisition based on the conceptual pattern analysis in perceptual information: Inf. Process. Soc. Jpn., Special Interest Group Spoken Lang. Process. (SIG-SLP), [print] Tech. Rep., 1999.
[22]	D. Roy and A. Pentland, “Learning words from natural audio-visual input,” in Proc. Int. Conf. Spoken Language Processing, vol. 4, 1998, pp. 1279-1283. [Buy Via Ask*IEEE]
[23]	M. Fujita and K. Ishii, “On the interaction with sound signal by entertainment robot,” in Proc. 13th Meeting Special Interest Group on AI Challenge, 2001, pp. 29-35. [Buy Via Ask*IEEE]

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