Demand Fixed lifetime Constant deterioration over time Varying deterioration over time
Constant [57, 58, 60, 72, 73, 95-104] [32, 36, 37, 40, 41, 43, 46, 48, 49, 105-153] [128, 132, 139, 154-162]
Time dependent [52, 57, 65, 72, 95-100] [36, 80, 81, 113, 127, 132, 134, 139, 163-198] [38, 108, 132, 139, 156, 199-222]
stock dependent [56, 61, 71, 223, 224] [35, 44, 45, 84, 194, 196, 225-243] [87, 212, 214, 244-247]
Price dependent [53, 61-65, 71, 91, 92, 223, 248, 249] [39, 42, 45, 47, 50, 80-86, 88, 128, 164, 167, 174-176, 178, 179, 191, 230-233, 235, 240, 242, 250-261] [38, 89, 93, 94, 128, 218, 244, 245, 247, 255, 262-271]
Function of other marketing factors [52-54, 56, 59, 61-64, 71, 90-92] [47, 50, 75, 80-86, 88] [76-79, 87, 89, 93, 94]
Uncertain [8, 34, 51, 55, 66-70, 73, 74, 90, 272-322] [32, 33, 35, 112, 323-333] [282, 297, 334-347]