1. Tudor Drugan, Sorana Bolboacă, Tudor Călinici, Dan Istrate, Horaţiu Colosi, Ramona Gălătus, Cosmina Bondor, Mădălina Văleanu, Andrei Achimaş, Ştefan Ţigan. Applications of Medical Informatics and Biostatisctics. SRIMA Publishing House, Romania, 2004, p. 193, ISBN 973-85285-3-4.
2. Sorana Bolboacă, Horaţiu Colosi, Tudor Drugan, Andrei Achimasş, Ştefan Ţigan. Elements of Medical Informatics and Biostatistics. SRIMA Publishing House, Romania, 2003, p. 211, ISBN 973-85285-0-X.
3. Tudor Drugan, Sorana Bolboacă, Horaţiu Colosi, Andrei Achimaş, Ştefan Ţigan. Statistical Inference of Medical Data. ALMA MATER Publishing House, Cluj-Napoca, Romania, 2003, p. 212, ISBN 973-8397-22-7.
4. Tudor Drugan, Sorana Bolboacă, Horaţiu Colosi, Ramona Gălătus, Tudor Călinici, Dan Istrate, Cosmina Bondor, Mădălina Văleanu, Andrei Achimaş, Ştefan Ţigan. Applied Medical Informatics. SRIMA Publishing House, Cluj-Napoca, Romania, 2003, p. 204, ISBN 973-8296-09-9.
5. Lorentz Jäntschi, Sorana Bolboacă. Applied Chemical and Instrumental Analysis. AcademicDirect, Cluj-Napoca, Romania, 2003, p. 60, ISBN 973-86211-6-X.
6. Tudor Drugan, Cosmina Bondor, Sorana Bolboacă, Tudor Călinici, Horaţiu Colosi, Ramona Gălătus, Dan Istrate, Mădălina Văleanu, Andrei Achimaş, Ştefan Ţigan. Practical Applications of Medical Informatics and Statistics. ALMA MATER Publishing House, Cluj-Napoca, Romania, 2002, p. 198, ISBN 973-85354-5-X.