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Pomerantz, J.; Nicholson, S.; Belanger, Y.; Lankes, R.D.: ¬The current state of digital reference : validation of a general digital reference model through a survey of digital reference services (2004) 0.01

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Pomerantz, J.: ¬A conceptual framework and open research questions for chat-based reference service (2005) 0.01

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