Sharp bounds for the number of solutions to simultaneous Pellian equations
Volume 126 / 2007
                    
                    
                        Acta Arithmetica 126 (2007), 125-137                    
                                        
                        MSC: Primary 11D25.                    
                                        
                        DOI: 10.4064/aa126-2-3                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            