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                                GOST
                             | 
                            Gwishiani J., Popkov Y. Information technologies for the managing of functional-spatial development of a city // Economics and the Mathematical Methods.  – 1991. – V. 27. – Issue 3 C. 445-457 .  | 
                        
                                                                    
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                                MLA
                             | 
                            Gwishiani, Jermaine, Popkov, Yury "Information technologies for the managing of functional-spatial development of a city." Economics and the Mathematical Methods.  27.3 (1991).:445-457.  | 
                        
                                                                    
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                                APA
                             | 
                            Gwishiani J., Popkov Y. (1991). Information technologies for the managing of functional-spatial development of a city.  Economics and the Mathematical Methods.  vol. 27, no. 3, pp.445-457  |