On the distribution of prime numbers which are of the form $x^2 + y^2 +1$
Volume 16 / 1970
                    
                    
                        Acta Arithmetica 16 (1970), 351-364                    
                                        
                        DOI: 10.4064/aa-16-4-351-364                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            