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1par Friedrichs Kurt Otto
Gordon and Breach cop. 1965Livre -
2par Friedrichs Kurt Otto
Springer-Verlag 1973Livre -
3par Friedrichs Kurt Otto
Birkhäuser 1986Livre -
4Livre
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5Livre
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6Livre
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7par Friedrichs Kurt Otto, Summer Seminar on Applied Mathematics
American Mathematical Society 1965, cop. 1965Livre