D. Velnić

Laparoscopic cholecystectomy: results after 1000 procedures.

Z. Perko, Ž. Rašić, Z. Čala, 1996, Acta medica Croatica : casopis Hravatske akademije medicinskih znanosti.

Laparoscopic treatment of nonparasitic cysts of spleen and liver.

Z. Perko, Ž. Rašić, Z. Čala, 1996, Journal of laparoendoscopic surgery.

Quo vadis, Croatia?!

D. Velnić, 2012 .

[Comparison of the results of laparoscopic cholecystectomy preformed in the usual way and with a lesser number of trocars].

Z. Perko, Z. Čala, D. Velnić, 2000, Lijecnicki vjesnik.

[Less invasive laparoscopic cholecystectomy: initial experience and literature review].

Z. Perko, Ž. Mimica, Z. Čala, 2001, Lijecnicki vjesnik.