UNIVERZITET SVETOZAR MARKOVIĆ, KRAGUJEVAC

THE SVETOZAR MARKOVIĆ UNIVERSITY, KRAGUJEVAC

Zbornik radova

Collection of scientific papers of the Faculty of Science

 

Vol. 7 (1986)

 

 C O N T E N T S

 

 

Sven J. Cyvin

Bjorg N. Cyvin

Ivan Gutman 

Topological properties of benzenoid systems. XLII. Number of Kekulé structures of more peri-condensed molecules 5

Ivan Gutman 

Zoran Marković

Topological properties of benzenoid systems. XLIa. Carbon-carbon bond types and total electron energy of benzenoid hydrocarbons 21
Vitko M. Šorić Distribution and characteristics of Phoxinus phoxinus in some waters of Yugoslavia 27

Miroslav Vučković

Nikola Rosić

On a linear differential equation 37
Stamena RadotićDas verhaltnis der produktion des ober- und unterirdschen teiles von biomase der art Chrysopogon gryllus Trin. auf dem kalksteinigen und serpentin geologischen grunde 45

Vukota Babović

Vladimir Ristić

Soldner's formula: the premature curiosity or the lost chance 53

Mladen Karaman

Spasenija Karaman

Urnatella gracilis leidy (Entoprocta, Urnatellidae) a new species in the hydrofauna SR Serbia 65

Petar Marković

Dragoslav Nikezić

Sava S. Milojević

Dragana Kost

Some results of investigation of the radiological situation of the Gruža lake and its contributors 73